As I said, a little confused about all these groups of people called Celts in different places. Any insight appreciated!
This is a complex question and more can be said (or asked further) but you'd have elements of answers in these previous comments
Is The Word Celt Used In Ancient Irish literature? ( u/Typologyguy )
How did the Galatians, a Gallic people, get to Asia minor? and What were the biggest differences between the Gauls and Celts ( u/Libertat )