Are these samples publicly available? It seems they over-sampled South-West parts of Ukraine (including Zakarpattia) once again.
How about making Ukrainian national average? In my opinion, for example in Global25 Western Ukrainians are over-represented:
https://www.theapricity.com/forum/sh...=1#post6862270
Currently existing GEDmatch averages for Ukraine, also skew in favour of Western Ukrainians.
From Kiev average I removed 2 mixed with Tatars/Kavkaz and 3 too western/southern shifted compared to the rest.