after taking another look at the samples, i think only these represent proper proto-Slavs.
the more northern plotting Romanians, Serbs and Bosniaks are pulled strongly towards these exact samples:
Code:
Viking_Russia_Pskov_VK159,28.62,50.38,7.63,3.49,4.19,0.00,2.08,0.00,0.00,1.86,0.48,1.27,0.00
Viking_Denmark_Jutland_VK340,28.29,43.29,9.89,5.02,8.09,0.00,3.75,0.00,0.44,0.10,0.00,1.12,0.00
Viking_Denmark_Langeland_VK287,27.47,45.26,8.62,7.09,7.54,0.00,1.50,0.79,1.13,0.21,0.21,0.16,0.00
Viking_Russia_Gnezdovo_VK272,27.10,42.86,8.37,4.01,8.44,3.37,1.60,0.00,1.68,2.01,0.00,0.00,0.56
Viking_Sweden_Gotland_VK454,25.59,45.53,14.97,2.70,4.74,0.30,0.73,2.49,0.00,0.34,1.21,1.40,0.00
Sunghir6_Russia_Sunghir6.SG_790_ybp,25.17,45.83,13.05,4.29,6.41,0.44,0.00,0.03,2.59,1.13,0.64,0.42,0.00
Ukraine_Lutsk_Medieval_VK541,23.15,43.28,11.70,7.62,7.79,1.05,1.58,0.00,1.18,0.56,0.79,0.00,1.29
Ukraine_Chernigov_VikingAge_VK542,22.48,43.78,10.72,8.56,9.14,0.26,0.00,0.00,1.64,0.82,0.98,0.73,0.87
Proto-Slav,25.98,45.03,10.62,5.35,7.04,0.68,1.41,0.41,1.08,0.88,0.54,0.64,0.34
these are early West and Pannonian Slavs, who probably picked up a
western influence immediately after leaving the proto-Slavic homeland.
Code:
I4137_Czech_Early_Slav_dup.I4137.SG_1235_ybp,30.89,37.94,12.04,8.95,5.72,0.86,0.00,0.00,2.09,0.47,0.11,0.93,0.00
AV1_Hungary_Avar_1361_ybp,29.17,40.22,11.71,8.24,7.15,0.06,1.56,0.00,0.48,0.97,0.27,0.00,0.17
AV2_Hungary_Avar_daughter.or.mother.AV1_1356_ybp,30.22,47.46,11.05,4.34,3.01,0.41,0.55,0.00,1.56,0.94,0.00,0.46,0.00
Viking_Poland_Cedynia_VK212,29.69,48.84,9.53,5.54,1.59,0.00,1.30,0.00,1.34,0.00,0.13,1.42,0.62
Viking_Denmark_Langeland_VK274,30.81,34.11,13.89,9.49,6.21,0.48,2.68,0.16,0.33,1.06,0.00,0.00,0.79
Early_West_Slav,30.16,41.71,11.64,7.31,4.74,0.36,1.22,0.03,1.16,0.69,0.10,0.56,0.32
this one is an outlier because of the high east med.
Viking_Denmark_Jutland_VK339,30.19,38.31,4.19,7.60 ,13.21,0.00,0.00,0.00,0.00,0.00,2.03,2.99,1.47
this one is probably an East Slavic + Scandinavian mix.
Viking_Russia_Ladoga_VK19,34.33,39.57,9.56,6.08,4. 86,0.00,0.00,1.29,0.94,1.44,0.09,0.00,1.85