Вот для Боролдоя например один тезис не мой, а китайских генетиков
Combined with the results of historical studies, we found that several modern populations with high frequencies of C2*-ST can be traced back to either an ancient Mongol Niru’un clan or ordinary Mongol tribes, including the Manghit tribe in Uzbekistan and Nogay populations, the Keneges tribe from Uzbekistan, the Hazara population from Afghanistan, the Daur population from China, and the Dulat, Uysun, and Kerey tribe in Kazakh populations. The details of the origin and migration history of these tribes or populations are discussed in the Supplementary Text. The Niru’un Mongols (which translates to “the pure Mongols”) were believed to be the descendants of Alan Quo’a. Genghis Khan belonged to the Kiyan clan in the Niru’un tribe (Supplementary Fig. S2) [33].