The Genetic Origin of the Indo-Europeans

[Gabru77]

Probability of branches not coming from Steppes, or weight of derivation from Non-Steppe ranked in accordance of the South of Caucausus theory:-
Euphratic(hypothesised branch) - 100% Non-Steppe
Anatolian - 95% Non-Steppe
Indo-Iranian - 80% Non-Steppe
Graeco-Armenian - 50% Non-Steppe
Albanian - 20% Non-Steppe

The above 4 real branches have two routes possible out of which first 2 real branches(Anatolian and Indo-Iranian) are indeed not from Steppes, while Graeco-Armenian is an ambiguous case