Perhaps Halfhound, Birchmoor, whoever she is can find an answer?
Again, you are looking at population differences through a compressed and blurry lens whereas the reality is like looking at 8K material, your view is very simplistic and very uneducated.
So, if you want to tie race, ethnicity, etc, firmly to genetic differences, then there's 17 races in the UK alone, or are we all one people when it suits? Lol