https://en.wikipedia.org/wiki/Tarim_mummies
The earliest Tarim mummies, found at Qäwrighul and dated to 1800 BCE, are of a Caucasian physical type whose closest affiliation is to the Bronze Age populations of southern Siberia, Kazakhstan, Central Asia, and the Lower Volga.[2]

The cemetery at Yanbulaq contained 29 mummies which date from 1100–500 BCE, 21 of which are Mongoloid—the earliest Mongoloid mummies found in the Tarim Basin—and eight of which are of the same Caucasian physical type found at Qäwrighul.[2]

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Between 2009-2015, the remains of 92 individuals found at the Xiaohe Tomb complex were analyzed for Y-DNA and mtDNA markers. Genetic analyses of the mummies showed that the maternal lineages of the Xiaohe people originated from both East Asia and West Eurasia, whereas the paternal lineages all originated from West Eurasia.