Oh boy. I already stressed my opinion in the other debate. Total fiction. Even Japanese, Chinese and Koreans - I would argue the differences are due to small founding populations in the past with random disequilibrium of some genes. But people keep saying “If you study outcomes you will find huge differences in the races and ethnicities, so there must be something”. Yes, it is socio-economical and cultural.
The world’s largest randomized trial happened in Germany, where one part of a biologically homogeneous population (in the West) was exposed to different socio-economical factors than the other (in the East). I used to be a subject in that study. Guess what! The outcomes were different. The Koreans are still running that same experiment, and despite identical gene pool the differences couldn’t be more drastic. The Northerners are smaller, live a lot shorter lives and have more diseases like tuberculosis and intestinal parasite infections. But hey, not all is bad in the North. Almost no obesity (except the Supreme Leader) and diabetes.
All right, I stop pontificating.
@Andrea: Please state the scientific use cases, and please provide how you want these ethnicities laid out, and we see what we can do.