Three Early Medieval Slavs - RISE568, Niemcza18, Markowice7 - in Eurogenes K15:
1) RISE568 (Czechia):
Admix Results (sorted):
# Population Percent
1 Baltic 36.17
2 Atlantic 34.99
3 Eastern_Euro 14.8
4 North_Sea 8.49
5 West_Med 4.15
6 West_Asian 1.4
Single Population Sharing:
# Population (source) Distance
1 Russian_Smolensk 18.3
2 Estonian_Polish 18.77
3 Belorussian 18.79
4 Polish 20.01
5 Lithuanian 20.05
6 Southwest_Russian 21.04
7 Ukrainian_Belgorod 21.22
8 South_Polish 21.33
9 Croatian 22.65
10 Austrian 23
11 Estonian 23.41
12 Ukrainian 23.41
13 Ukrainian_Lviv 23.48
14 La_Brana-1 23.74
15 Kargopol_Russian 24.98
16 Southwest_Finnish 25.7
17 East_German 25.89
18 Hungarian 26.15
19 Moldavian 26.55
20 Erzya 27.19
Mixed Mode Population Sharing:
# Primary Population (source) Secondary Population (source) Distance
1 72.9% Lithuanian + 27.1% French_Basque @ 15.79
2 78.3% Belorussian + 21.7% French_Basque @ 16.43
3 79% Estonian_Polish + 21% French_Basque @ 16.62
4 81.7% Russian_Smolensk + 18.3% French_Basque @ 16.76
5 73.5% Lithuanian + 26.5% Southwest_French @ 17.4
6 76.1% Lithuanian + 23.9% Spanish_Aragon @ 17.5
7 80.9% Belorussian + 19.1% Southwest_French @ 17.63
8 76% Lithuanian + 24% Spanish_Valencia @ 17.71
9 83.3% Belorussian + 16.7% Spanish_Aragon @ 17.73
10 85.8% Russian_Smolensk + 14.2% Southwest_French @ 17.73
11 81.7% Estonian_Polish + 18.3% Southwest_French @ 17.75
12 77% Lithuanian + 23% Spanish_Castilla_La_Mancha @ 17.79
13 77% Lithuanian + 23% Spanish_Andalucia @ 17.81
14 88.1% Russian_Smolensk + 11.9% Spanish_Aragon @ 17.81
15 83.9% Estonian_Polish + 16.1% Spanish_Aragon @ 17.82
16 83.7% Belorussian + 16.3% Spanish_Valencia @ 17.89
17 89% Russian_Smolensk + 11% Spanish_Valencia @ 17.93
18 84.7% Belorussian + 15.3% Spanish_Castilla_La_Mancha @ 17.95
19 84.3% Estonian_Polish + 15.7% Spanish_Valencia @ 17.95
20 84.7% Belorussian + 15.3% Spanish_Andalucia @ 17.95
2) Niemcza18 (Poland):
Admix Results (sorted):
# Population Percent
1 Baltic 42.12
2 Atlantic 32.49
3 West_Asian 14.45
4 North_Sea 10.95
Single Population Sharing:
# Population (source) Distance
1 Russian_Smolensk 26.33
2 Belorussian 27.06
3 Lithuanian 27.21
4 South_Polish 27.9
5 Estonian_Polish 28.01
6 Polish 28.1
7 Ukrainian_Belgorod 28.18
8 Croatian 28.57
9 Southwest_Russian 28.65
10 Ukrainian_Lviv 28.89
11 Austrian 29.08
12 La_Brana-1 29.82
13 Ukrainian 29.9
14 Estonian 30.48
15 Hungarian 30.82
16 Moldavian 31.25
17 East_German 31.5
18 Southwest_Finnish 32.89
19 Romanian 33.03
20 Bulgarian 33.59
Mixed Mode Population Sharing:
# Primary Population (source) Secondary Population (source) Distance
1 77.4% Lithuanian + 22.6% French_Basque @ 25.17
2 80.8% Lithuanian + 19.2% North_Ossetian @ 25.18
3 84.8% Lithuanian + 15.2% Abhkasian @ 25.48
4 84.4% Lithuanian + 15.6% Georgian @ 25.55
5 82.7% Lithuanian + 17.3% Adygei @ 25.63
6 87.9% Russian_Smolensk + 12.1% North_Ossetian @ 25.65
7 82.7% Lithuanian + 17.3% Balkar @ 25.7
8 83.9% Lithuanian + 16.1% Ossetian @ 25.7
9 82.3% Lithuanian + 17.7% Kabardin @ 25.71
10 83.7% Belorussian + 16.3% North_Ossetian @ 25.73
11 86.8% Russian_Smolensk + 13.2% French_Basque @ 25.79
12 91.4% Russian_Smolensk + 8.6% Abhkasian @ 25.85
13 79.3% Lithuanian + 20.7% Spanish_Aragon @ 25.86
14 79% Lithuanian + 21% Spanish_Andalucia @ 25.87
15 91.4% Russian_Smolensk + 8.6% Georgian @ 25.9
16 78.7% Lithuanian + 21.3% Spanish_Valencia @ 25.91
17 83.6% Lithuanian + 16.4% Chechen @ 25.93
18 78.1% Lithuanian + 21.9% Southwest_French @ 25.93
19 90.6% Russian_Smolensk + 9.4% Adygei @ 25.94
20 79.6% Lithuanian + 20.4% Spanish_Castilla_La_Mancha @ 25.94
3) Markowice7 (Poland):
Admix Results (sorted):
# Population Percent
1 Baltic 39.91
2 Eastern_Euro 24
3 Atlantic 17.33
4 North_Sea 12.2
5 West_Med 5.54
6 Sub-Saharan 1.02 --> probably ancient DNA damage
Single Population Sharing:
# Population (source) Distance
1 Lithuanian 8.65
2 Estonian_Polish 9.75
3 Belorussian 10.16
4 Russian_Smolensk 11.46
5 Southwest_Russian 11.89
6 Ukrainian_Belgorod 12.24
7 Polish 14.05
8 Erzya 15.43
9 South_Polish 15.64
10 Estonian 15.67
11 Kargopol_Russian 15.69
12 Ukrainian 15.77
13 Ukrainian_Lviv 16.54
14 Croatian 19.8
15 East_Finnish 21.12
16 Moldavian 22.09
17 La_Brana-1 22.75
18 Finnish 22.94
19 Southwest_Finnish 23.77
20 Hungarian 23.97
Mixed Mode Population Sharing:
# Primary Population (source) Secondary Population (source) Distance
1 98% Lithuanian + 2% Sardinian @ 8.58
2 83% Lithuanian + 17% Estonian_Polish @ 8.6
(...)
^^^
Now it makes sense why Slavic admixture was represented by a "Lithuanian-like source":
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4714572/
Quote:
"As previously reported [11], the formation of the Slavic people (...) had a significant impact on the populations of Northern and Eastern Europe, a result that is supported by an analysis of identity by descent segments in European populations [10]. Here, despite characterizing populations by genetic similarity rather than geographic labels, we infer the same events involving a “Slavic” source (represented here by a cluster of Lithuanians; lithu11 and colored light blue) across all Balkan groups in the analysis (Greece, Bulgaria, Romania, Croatia, and Hungary) as well as in a large cluster of Germanic origin (germa36) and a composite cluster of eastern European individuals (ukrai48; Figures 4A and 4B )."

