Hungarians are usually portrayed as whiny nationalists who can't integrate and believe everyone is out to get them. The most famous example is the character Istvan Fekete (or Pisty for short) played by Mugur Mihăescu.

Bulgarians are depicted as vegetable eaters (specifically pickled vegetables and especially cucumbers) and sometimes car thieves. Some examples I could thing of is the depiction of Hristo Stoichkov (voice by Ioan Gyuri Pascu) on the satirical cartoon "Animat Planet Show". Another example is from the sitcom "Nimeni Nu-i Perfect" where the main character, Dan Chivu want to take his pregnant wife, Eva to Italy in order to avoid the atrociuous Romanian healthcare system but their trip is cut short because when they cross into Bulgaria, their car gets stolen

Greeks have the stereotypical Greek image. One good example is the character Kostas Tsatsikis also played by Ioan Gyuri Pascu

Turks are usually depicted in the Ottoman context or sometimes as truck drivers transporting all sorts of sus stuff here (drugs, prostitutes, immigrants etc.).

Albanians are hardly depicted but when they are they're usually depicted as very backawrds on par with third world countries like those in Africa and the Middle East

As for former Yugoslavia ? It's usually Serbia who gets the most depictions and mentions (altho not to the level of Hungary or Bulgaria). Also Bosnia was an important plot point in an old sitcom but no actual Bosniaks appear in it.