Figure 2: Estimated population genetic structure of Tibetan in Gannan and Tianzhu and other 36 worldwide populations.
From: Genetic structure of Tibetan populations in Gansu revealed by forensic STR loci

Note that the bold names “Tibetan”, “Lolo-Burmese”, “Han Chinese”, “northwest China”, “Korean”, “Siberian”, “Tai-Kadai Hmong-Mien”, “European”, and “African” refer to the group classifications of present-day populations based on language and geographic affinity. Those names are not the labels for the inferred ancestral population in Structure analysis.