My issue with that list is not so much with the issue of presentism, as that bias is rather difficult to get rid of, especially among Greeks, rather that it includes Greeks from all kinds of backgrounds, hence you often get very odd rankings, especially when combined with this presentism. This is how you get extreme cases like Maria Kallas (23rd), an opera singer, Giorgos Seferis (29rd), a poet, Nikos Galis (33rd), a basketball player, Giannis Ritsos (40th), a poet, and Kornilios Kastoriadis (58th), a philosopher professor, Lakis Lazopoulos (83rd), a comedian, Thanassis Vegos (83rd), a comedian, Aliki Vougiouklaki (88th), an actress, all rank higher than figures like Solon of Athens (67th), Euripides (80th), Philip II of Macedonia (96th) and Thales of Miletus (99th).

Overall, this list is having various issues, one of which is how good old Fascist Dictator Georgios Papadopoulos ranks as the 59th of the 100 Great Greeks, despite it being clear from the surveys that the support for the Greek Junta is nowhere close to that as far as it comes to the Greek populace as a whole, hence it shows that the survey was not the best when it comes to representation (though perhaps there was some organized action by Junta-supporters to achieve that number).

Regarding the average Greek’s attitude to Byzantium (which you want to undermine), there is also the odd case of having Helene Glykatzi-Ahrweiler as the 86th Greatest Greek. While that is also certainly influenced by presentism, in this case this presentism is reflecting on her work in promoting Byzantium to the average Greek, for which she was well known in Greece during that time (especially in the 1980s-2000s).