Seems they are very Slavic...
Distance to: German_Brandenburg_outlier(Beeskow)
4.02705848 Polish_Silesia
4.70443408 Ukrainian
4.88253008 Polish_Mazovia
4.92112792 Polish_Subcarpathia
5.68677413 Ukrainian_Galicia
5.68941122 Polish_Lesser_Poland
5.73545988 Ukrainian_Moldova
5.86013652 Polish_South
6.35386497 Polish
6.48074070 Polish_Greater_Poland
6.59850741 Russian_Southwest
7.77675382 Polish_Warmia-Masuria
Distance to: German_East_Prussia_Memelland
4.46127784 Lithuanian
5.08642310 Russian_Pskov
6.13553584 Estonian
6.17088324 Belarusian_Minsk
6.40609866 Russian_Smolensk
6.68522999 Belarusian
7.07285657 Russian_Tver-Yaroslavl
7.89439041 Polish
7.92475867 Polish_Kujavia
8.10971639 Polish_Mazovia
8.24884840 Russian
8.54155138 Latvian