Interested if anyone versed in neurodivergence topic as well Elementary Sherlock can investigate it? What do you guys think anyway?

What if you were to make a hypothetical archaeological documentary trying to show Yamnaya culture, lifestyle, language, social dynamics based on all the information we have on it. There can be a progressing plot it's based on. Perhaps including the migration and expansion timelines. From start to end of the Yamnaya. And a time traveller from 2026 going travelling to Yamnaya era. A proper Proto-Indo-European time travel contact sci-fi could be. Just imagine

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Question

So, Yamnaya profile was formed as admix between Sredny Stog (55-66%) and Remontnoye type (34-45%). This is just autosomal contribution from each side.

Haplogroups wise, Sredny Stog is mostly I2 which becomes minority (<10%) in Yamnaya and pretty much disappears post Yamnaya. Whereas Remontnoye type has J2b-L283 (major Balkans Yamnaya pulse which caused language shift in Balkans, cf. Albanian, Greek, Daco-Thracian). They also had R1b-M269 (we found it in Steppe Eneolithic individual NV3003).

So as it seems, Yamnaya is paternally derived from Remontnoye type, and the paternal contribution of Sredny Stog is:-

• Very minimal

• The contribution itself vanished in post Yamnaya and doesn't survive in significance anywhere, part of the reason you never hear about I2 in PIE discussion, and the focus is always R1b/R1a etc.

So the question - how can Sredny Stog be PIE?

Furthermore it has roots in local Dnieper cultures, which means linking it with Caucasus route for Anatolian branch is difficult

So logically evaluating the data, it seems Yamnaya derived language from the Remontnoye type admix contribution into it.

What would be the consequences? Share your thoughts how the narrative would shift