Not "Caucasian" but Western Eurasian. The term Caucasian hasn't been used in years academically because Western Eurasians didn't all originate in the Caucasus. Everyone from Iceland to Morocco to Egypt and Ethiopia, to Arabia, to India, to Kazakhstan to now because of the Russians Siberia and all the way back to the Caucasus has whole or partial Western Eurasian ancestry. Ok not EVERYONE because of modern day travel and immigration, and maybe some Siberians and such do not, but otherwise......... ALL of those indigenous populations have whole or partial Western Eurasian ancestry. And now, the majority of North, Central and South America has whole or partial Western Eurasian ancestry too. It is everyone on this planet. More abundant than any other, with Eastern Eurasian genetics a close 2nd. Which always left me baffled how some people think these genetics are "under threat". They are the most abundant genetics in the world. Europeans are just a branch of Western Eurasians and only differ from other Western Eurasians really in their European Western Hunter Gatherer component, which only makes up like 15% of the overall European genome. Indians differ in their Dravidian component, American Hispanics differ in their Amerindian component, North Africans differ in their sub-Saharan component, Mid Easterners differ in their Southern Arabian component...... Which makes them all a little bit unique. But mostly overlapping.