9/ For comparison, the often cited scenario with high Basal Eurasian legacy suggests a spread of 'West Eurasian' ancestry by UP European-like sources; – while we can not exclude this scenario, we consider it more unlikely (for the formation of West Asian groups):

7/ The inferred location of the shared population Hub for West and East Eurasians is located in northern Mesopotamia and on the Persian plateau; – the homeland of "Basal Eurasians" would be most likely located in Northeast Africa and the western Arab peninsula.

6/ Mesolithic and Neolithic Iranian groups derive significant amounts of their ancestry (among other sources) from the deepest split on the Basal West Eurasian branch: 'WEC2'; the remainder being EEC via AASI and ANE geneflow, as well as "basal" admixture (Emiran?).

4/ and Ancient East Eurasians:

3/ based on this scenario, a working qpGraph model for Ancient West Eurasians:

2/ These two waves and subsequent contact events with each other, would give rise to the Paleolithic and Epipaleolithic variation of ancient Eurasians:

1/ The two successful major waves are the "Initial Upper Paleolithic" (IUP) wave affilated with Basal East Eurasians at c. 48kya – followed by the "Upper Paleolithic" (UP) wave affilated with Basal West Eurasians at c. 41kya:

Both archaeological/material culture evidence as well as archaeogenetic data confirm our previous model on the population history of the Asia-Pacific region:

A qpGraph run focused on ancient and modern East Asian/Eurasian populations:

Basically, modern East Eurasians (South Asians/AASI, Onge, Hoabinhian, East Asian, and Australasian as well as Amerindian populations) descend from a single southern dispersal route, which rapidly diverged into the respective lineages in South, Southeast and Eastern Asia, as well as Oceania...

The deep roots of Iranian hunter-gatherers & Crown Eurasian-like "Population Hub" legacy; A third pole of genetic diversity next to EEC and WEC: t.co/LVjOBRYUKR

7/ The ESEA branch rapidly diverged into Onge/Hoabinhian, Tianyuan, and the AEA lineage(s): Later Tianyuan-like ancestry was replaced by expanding ANEA, while Hoabinhian ancestry became increasingly replaced by ASEA (except for Andamanese). Both Onge and Tianyuan are Basal to East Asians.

6/ While the AEA can be plausible modeled as a trifurication between Onge and Tianyuan, they can also be modeled as admixture between a primarily Onge-like group (79%) and minor Tianyuan admixture (21%):