Erdogans ancestors came from northern Georgia. But he doesn't consider himself Georgian even though in earlier years he said his ancestors were Georgians.....
They are different groups of arabs - one from Hatay, they are nusayri or sunni but score like coastal syrians and lebanese. They speak levantine dialect. They are actually close to Syria.
The other from Mardin/Siirt, they score like armenians, assyrians with either small turkish or kurdish admixture. They speak like northern Iraqi arab - not mutual intellible with the one in Hatay. ( I had friends who told me that so IDK). Most of them assimilate.
Then the one from Urfa - I haven't seen a genetic result but some of them can have Bedouin/Saudi Arabian phenotypes.. If they score like southwest asian/red sea 25%+ I wouldn't be suprised.
No, they are not assimilated, they make majority in three districts (Harran plain) which is like 95%+ arab and are the highest population wise. They live very isolated in their community and have high amount of children and are more similar to their kurdish neighbours, same style music,clothing., tribalism and dances.
From Urfa
https://www.youtube.com/watch?v=BiFy5B04cx4