An old Israeli Rabbi has spent most of his life researching genealogy of the people in that middle eastern region. His website
HERE shows why he believes that Celtic tribes were living in that region thousands of years ago, and later migrated westward into most of Europe. He identifies the nomadic people known as Cimmerians who roamed over what is now Turkey thousands of years ago as being Celtic tribes. he believes those tribes migrated westward into Europe and were part of the barbarian tribes known collectively as Gauls who Julius Caesar conquered later on.
I have no idea whether he's right or wrong, but his site is interesting to me because I have an interest in the migration patterns of ancient tribes and racial groups. Yeah I know before anyone says it, I have too much time on my hands.
The Cimmerians left very little trace of themselves; after they sacked Gordion, they pillaged a bit more, then were destroyed by (if memory serves) the Scythians. IOW, there's no way to know much about the Cimmerians, what language they spoke, what they wore, etc.