Christian Byzantines were predominantly Greeks, but also Armenians, Assyrians, Chaldeans etc. 

Turks are Muslim invaders from Mongolia. Totally alien to Asia Minor and Europe. Turks came with zero civilization, so the Ottomans had to steal whatever they got. Food, names of everything sea related etc, architecture etc. The so-called "dark ages" in Europe is a false narrative promoted by Jews and the narcissistic and self-proclaimed "Enlightened" philosophers, but Asia Minor got a real and devastating dark ages after the Turks came, never to recover. Even today Turks flee their own Muslim land, as their forebears fled their own Mongolian self-created hell hole. Where will Turks flee after Muslims have destroyed Europe? God forbid. Muslims Turks invaded Byzantine Empire and turned her into yet another third world Muslim hell hole, as Muslims did with the Egyptian Empire, Persian Empire etc. Girls with heavy Turkish blood are much more ugly than the rest. Stocky, little or no curves, no grace and sophistication etc. Turkey guys even worse.