Isn't Kivanc Tatlitug half Balkan? I looked him up once after seeing him in some movie on netflix. I don't know the ancestry of the others.
My opinion isn't worth all that much on this subject because I've never been to Turkey, and we have very few Turkish families here. All I can say is that my impression is that a good number of the actors in Turkish film and tv look more ambiguous than the people in the crowd pictures I've seen, or pictures of politicians for that matter. That leads me to believe that these actors and actresses are not totally representative of the different "looks" in Turkey. Maybe not as disparate as actors and actresses in Bollywood versus real life Indians, but still disparate.
The only other thing I've noticed is that the Turks I meet, including my hairdresser and his wife, who look rather Greek or "Balkan" like, are usually from near Istanbul or from the western coastal areas. That may not be 100% the case, but that's my impression.
Anyway, if I were going to watch hours of Turkish dramas, I'd rather look at and listen to him...