Earlier quoted context omitted.
adding australian aborigines, who some consider to be the oldest human civilization, dna-wise https://www.history.com/news/dna-study-finds-aboriginal-aust...
You forget about Africa which seems to have the largest genetic diversity of Homo Sapiens (the prehistoric dispora seems to have been a genetic narrowing point) - that means wider tails on bell curves - it's why they have the tallest and shortest populations, the fastest (and probably slowest), etc etc
Of course, post-agriculture most humanity lives in (East and South) Asia, except in Cyrus' age where a third of humanity lives in West Asia and Eastern North Africa. Persia ruled 1/3rd of humanity then, the most out of any empire after that. Except perhaps China of some periods