Similarities of Samara Outlier to Estonia CW. In third column is typical Yamnayan and in 4th typical hunter gatherer from Samara, the EHG.
M913021 Rise00 M630274 I0432 M655536 i0237 M218547 I0124 Estonia CW, 4 kya Samara Poltavka outlier R1a-M417>Z93 2925-2536 BC Yamnaya Samara HG 7.6 kya Run Time 8.05 Run time 7.79 Run time 10.43 Run time 5.57 S-Indian 0 S-Indian 0 S-Indian - S-Indian - Baloch 14.27 Baloch 14.7 Baloch 30.11 Baloch 14.33 Caucasian 0 Caucasian 0 Caucasian 5.75 Caucasian - NE-Euro 59.09 NE-Euro 63.14 NE-Euro 58.99 NE-Euro 75.62 SE-Asian 0 SE-Asian 0 SE-Asian - SE-Asian - Siberian 0.8 Siberian 0 Siberian - Siberian - NE-Asian 0 NE-Asian 0 NE-Asian - NE-Asian - Papuan 0 Papuan 0 Papuan - Papuan - American 0 American 0 American 3.58 American 9.62 Beringian 0 Beringian 0 Beringian 1.46 Beringian 0.15 Mediterranean 25.26 Mediterranean 22.15 Mediterranean - Mediterranean - SW-Asian 0 SW-Asian 0 SW-Asian - SW-Asian - San 0 San 0 San - San - E-African 0 E-African 0 E-African - E-African - Pygmy 0 Pygmy 0 Pygmy - Pygmy - W-African 0.5 W-African 0 W-African 0.11 W-African 0.2
The difference between Samara Outlier and Estonia CW is lower NE Euro and higher Mediterranean in CW, denoting more admixture with European Farmer EEF, and very low EEF in SO or complete lack of it. Making it pure (or almost) hunter gatherer.
The difference between SO and Yamnaya/Samara HG is that SO has lots of Med admixture making it very WHG without much of EHG mix. It also lacks completely American and Beringian admixtures, a signature of anyone coming from Yamnaya and Steppe.
I think SO will be very close in admixture composition and genetics to newly discovered Latvia HG and Ukrainian HG. I just wonder if they also will have Baloch? True WHG didn't have Baloch. It might be 4th distinct hunter-gatherer of Europe, with company of WHG, SHG and EHG.