The Sredny Stog sample from the eastern banks of the Dnieper river dating to 4340-4178 BC can be found on this blog. However it's format is simulated into G25, but whatever it's better then nothing for now. Also + it's almost identical to Yamnaya.

musaeumscythia.blogspot.com/… (https://musaeumscythia.blogspot.com/2022/05/neolithic-don-river-foragers-were-key.html?m=1&fbclid=IwAR1U8Qavxiv0pDMQCWlJOaQZ8gMncjtlVdAfvGTHGzhc7024npraD_o_s3Q)

https://nitter.moomoo.me/nrken19/status/1649387473712054275#m