1. The great migration you are referring to, included Albanians. Nobody calls it "Serbian" except for Serbs.

That said, there is proof of Albanian expulsion and ethnic cleansing out of Kosovo. As well as proof of Serbian colonization of Kosovo.

1. It tells one that the ancestors of those Serbs native to Ks used to identify as Albanian. Further proof that Albanians did exist here, and were in larger numbers proportionally, than they are today. Assimilation declined their numbers.

I guess you don't want more sources than my previous comments?

1. Archeologic/others:

2. Koman Culture - In 1898 it was excavated in a large cemetery, near the Dalmatian Castle, in the village of Koman in Puka. Subsequently, a large number of similar cemeteries were discovered, about 30, spread mainly in Northern and Central Albania. The geographical distribution, typology, inventory and the same chronology of these cemeteries have led scholars to identify in them the early medieval Albanian culture, called "Kulture Koman" (VI-VIII century). In recent years, the discoveries of the "Koman Culture" have been made in the south of Albania and beyond the state borders, in Montenegro, Kosovo, Macedonia and Greece.

3. From what is known from the old Balkan populations territories (Greeks, Illyrians, Thracians, Dacians), the Albanian language is spoken in a region where Illyrian was spoken in ancient times.

4. There is no evidence of any major migration into Albanian territory since the records of Illyrian occupation. Because descent from Illyrians makes "geographical sense" and there is no linguistic or historical evidence proving a replacement, then the burden of proof lies on the side of those who would deny a connection of Albanian with Illyrian.

5. The Albanian tribal society has preserved the ancient Illyrian social structure based on tribal units.

6. Many of what remain as attested words to Illyrian have an Albanian explanation and also a number of Illyrian lexical items (toponyms, hydronyms, oronyms, anthroponyms, etc.) have been linked to Albanian.

7. Words borrowed from Latin date back before the Christian era, while the Illyrians on the territory of modern Albania were the first from the old Balkan populations to be conquered by Romans in 229–167 BC, the Thracians were conquered in 45 AD and the Dacians in 106 AD.

8. The ancient Illyrian place-names of the region have achieved their current form following Albanian phonetic rules.

9. The characteristics of the Albanian dialects Tosk and Geg in the treatment of the native and loanwords from other languages, have led to the conclusion that the dialectal split occurred after Christianisation of the region (4th century AD) and at the time of the Slavic migration to the Balkans or thereafter between the 6th to 7th century AD with the historic boundary between the Geg and Tosk dialects being the Shkumbin river which straddled the Jireček line.

10. Cities whose names follow Albanian phonetic laws – such as Shtip (Štip), Shkupi (Skopje) and Nish (Niš) – lie in the areas, believed to historically been inhabited by Thracians, Paionians and Dardani; the latter is most often considered an Illyrian tribe by ancient historians. While there still is no clear picture of where the Illyrian-Thracian border was, Niš is mostly considered Illyrian territory.

1. Linguistic:

a) In terms of linguistics, the pre-Indo-European substrate language spoken in the southern Balkans has probably influenced pre-Proto-Albanian, the ancestor idiom of Albanian. The extent of this linguistic impact cannot be determined with precision due to the uncertain position of Albanian among Paleo-Balkan languages and their scarce attestation. Some loanwords, however, have been proposed such as shegë ("pomegranate") or lëpjetë ("orach", compare with Pre-Greek lápathon, λάπαθον, "monk's rhubarb"). Albanian is also the only language in the Balkans which has retained elements of the vigesimal numeral system - njëzet ("twenty"), dyzet ("forty") - which was prevalent in the Pre-Indo-European languages of Europe as the Basque language which broadly uses vigesimal numeration, highlights.

This pre-Indo-European substratum has also been identified as one of the contributing cultures to the customs of Albanians.

b) Latin loans are particularly numerous and reflect different chronological layers. From Latin specifically, loans are dated to the period of 167 BCE to 400 CE. So, where did the Proto-Albanian speakers meat the Latin speakers?

Look at map 1. (https://cdn.vox-cdn.com/assets/4821916/Roman_Republic_Empire_map.gif) to see where the Roman Empire had spread by the first century. (The Roman Empire, explained in 40 maps - Vox)

Moreover, let’s see some Roman events that happened in the territory of today’s Kosovo until the 1st century BC:

• 229 BC - Illyrian Wars: Rome invaded the territory of the Ardiaei.
• 228 BC - Illyrian Wars: The Ardiaei surrendered some territory, including strategically significant ports, to Rome, ending the war. The Ardiaei were an Illyrian people residing on territory of present-day Albania, Kosovo, Montenegro, and Bosnia and Herzegovina between Adriatic coast on the south, Konjic on the north, along the Neretva river and its right bank on the west, extending to Lake Shkodra to the southeast.
• 29 BC - Moesia was annexed to Rome. Moesia was an ancient region and later Roman province situated in the Balkans south of the Danube River. It included most of the territory of modern-day Central Serbia, Kosovo and the northern parts of North Macedonia
• AD 86 - Domitian's Dacian War: The Dacian king Decebalus invaded Moesia.
• AD 88 - Domitian's Dacian War: Decebalus agreed to return all Roman prisoners of war and accept his status as a Roman client in exchange for an annual subsidy of eight million sestertii, ending the war.

The Christian religious vocabulary of Albanian is mostly Latin as well including even the basic terms, leading Joseph (2018) to argue that Albanians were Christianized under Roman Catholic influence. Some scholars believe that the Latin influence over Albanian is of Eastern Romance origin, which would exclude Dalmatia as a place of origin. Adding to this the several hundred words in Romanian that are cognate only with Albanian cognates, these scholars assume that Romanians and Albanians lived in close proximity at one time. According to the historian Fine, an area where this might have happened is the Morava Valley (https://www.researchgate.net/figure/The-location-of-the-Morava-valley-in-the-Central-Balkans_fig1_330321590).

Because the Latin words common to only Romanian and Albanian are significantly less than those that are common to only Albanian and Western Romance, Mihaescu argues that the Albanian language evolved in a region with much greater contact to Western Romance regions than to Romanian-speaking regions, and located this region in present-day Albania, Kosovo and Western Macedonia, spanning east to Bitola and Pristina.

Madgearu concludes that it has been shown that in some areas a Latinate population that survived until at least the seventh century passed on local placenames, which had mixed characteristics of Eastern and Western Romance, into the Albanian language. Look at map 32 to see the region in the along the line that divides Western and Eastern Empires (https://cdn.vox-cdn.com/assets/4837836/dividedempire.jpg).

c) Greek loans have various chronological origins, with two distinct periods. The earliest Greek loans began to enter the Albanian language at circa 600 BCE, and are of Doric provenance. Joseph argues that this stratum reflects contacts between Greeks and Proto-Albanians from the 8th century BCE onward, with the Greeks being either colonists on the Adriatic coast or Greek merchants inland in the Balkans. The second wave of Greek loans began after the split of the Roman empire in 395 and continued throughout the Byzantine, Ottoman and modern periods.

Dorian Greeks settled in Illyria before 2000 BC, ancient regions of the Balkan peninsula occupied by Indo-European-speaking tribes, including the Dalmatians and Pannonians. Warlike and piratical, they withstood (6th cent. B.C.) Greeks attracted by their iron mines and later attacks by Macedonians. The Romans conquered them and set up (168-167 B.C.) the province of Illyricum. (To see the regions of Dalmatia, Pannonia, Macedonia and Greece, visit https://en.wikipedia.org/wiki/History_of_Dalmatia#/media/File:Roman_provinces_of_Illyricum,_Macedonia,_Dacia,_Moesia,_Pannonia_and_Thracia.jpg)

d) Although the Balkans had been raided by Slavic tribes, the early Slavic settlement and power in Kosovo was not big, until the region was later absorbed into the Bulgarian Empire in the 850s, where Christianity and a Byzantine-Slavic culture was cemented in the region.

Wilkes holds that the Slavic loans in Albanian suggest that contacts between the two populations took place when Albanians dwelt in forests 600–900 metres above sea level (for reference: Prishtina - Elevation: 652 m). Rusakov notes that almost all lexemes related to seamanship in the Albanian language are loan-words, which may indicate that speakers of the proto-language did not live on the Adriatic coast or in close proximity to it. The contacts began after the South Slavic invasion into the Balkans in the 6th and 7th centuries. Slavic invasion probably shaped the present geographic spread of the Albanians. It is likely that Albanians took refuge in the mountainous areas of northern and central Albania, eastern Montenegro, western North Macedonia and Kosovo. Long-standing contact between Slavs and Albanians might have been common in mountain passages and agriculture or fishing areas, in particular in the valleys of the White and Black branches of the Drin and around the Shkodër and Ohrid lakes. The contact with one another in these areas have caused many changes in Slavic and Albanian local dialects.

2. Historians:

The region of Kosovo was originally inhabited by Thracians, and subsequently by Illyrians and Celts.

The main theories on Albanian origins all suppose a Paleo-Balkanic main origin, but they vary between attributing this origin to Illyrians, Thracians, Dacians, or another Paleo-Balkan people.

Those who argue in favour of an Illyrian origin maintain that the indigenous Illyrian tribes dwelling in South Illyria went up into the mountains when Slavs occupied the lowlands, while another version of this hypothesis states that the Albanians are the descendants of Illyrian tribes located between Dalmatia and the Danube who spilled south.

Scholars who support a Dacian origin maintain on their side that Albanians moved southwards between the 3rd and 6th centuries AD from the Moesian area, in present-day Romania.

Those that argue instead for a Thracian origin and maintain that the proto-Albanians are to be located in the area between Niš, Skopje, Sofia and Albania or between the Rhodope and Balkan Mountains, from which they moved to present-day Albania before the arrival of the Slavs.

1. You said I am native, yet somehow felt the need to say: Albanians were first mentioned in the 11th century. Which is not true.

2. You have 300 sources in the sources or bibliography section: https://en.m.wikipedia.org/wiki/Origin_of_the_Albanians

3. As for evidence:

4. Genetic:

"Furthermore, several Roman-era samples with a West Balkan autosomal profile [(Croatia: Sipar, Ščitarjevo); Serbia (Viminacium)] also harboured E-V13. This does not exclude a Thracian origin, as the historical region of Dardania (roughly modern Kosovo, southern Serbia, and western North Macedonia) is recorded as a zone of linguistic contact between “Illyrian” and “Daco-Thracian” groups (Fig. S7) (1, 7). It is therefore likely that the population that introduced E-V13 into Albanians would plot close to Roman era West Balkan groups. "

"E-V13 and J2-M12 (the parent clade of J-M172), both indicate a particular "range expansion in the Bronze Age of southeastern Europe”. R1b, meanwhile, has been associated with the spread of Indo-European languages in Europe. Within the Balkans, all three have a local peak in Kosovo....

Haplogroups in the modern Albanian population is dominated by E-V13 (44% of Albanians in Kosovo), which first expanded into Europe some 5300 years ago. The current distribution of this lineage might be the result of several demographic expansions from the Balkans, such as that associated with the Balkan Bronze Age, and more recently, during the Roman era with the so-called "rise of Illyrican soldiery".

The second haplogroup most often found among the Albanians of Kosovo is R1b, with 21%. Looking at today’s distribution of R1b-Z2103/BY611 and its sub-branches, one might speculate that the shift from the Steppes to the Mediterranean must have occurred around 3300-4600 years ago.

Y haplogroup J in the modern Balkans is mainly represented by the sub-clade J2b. Carriers of J2b-L283 (17% of the Albanians in Kosovo) must have moved to the Balkans between the Neolithic and Bronze Ages (7000-9000 years ago).

Ancient graves found in Croatia dating back to the Bronze Age were found to also belong to the Y-chromosomes J2b2-L283 and R1b-Z2103, the latter of which was assigned to Vučedol culture. The findings are believed possibly to be from Proto-Illyrian migrations to the Balkans.

I am dividing the rest of evidence, as most probably they are going to remove this comment due to mentioning genetics.