>>520890435
Byzamtium was full of Greeks, Romans and Anatolyans, Phoenicians even some diaspora Celts and what not.
They pretty much breeded themselves out.

If you want to see a pure bred Turk, look at the Yakut people in Siberia.

They where a Turkic people that broke off the Mongol horde to Siberia.
Well before their Byzantium adventures.