imho, the different human species need to be considered in the Book of Enoch/Annunaki/Enki paradigm. i've no idea what primates/homonid versions were available when the Annunaki showed up and started mucking about, but (again, totally imho) it seems caucasians/nords/aryans were the final result. however, there's ample evidence to show neanderthals were around long before the Annunaki showed up.

or maybe the original, underlying, Ur-source of the conflict between j's and the aryan peoples is aryans were what happened when Enki (and, iirc, some being from Sirius or Pleiades) took out or improved on the fucked up neanderthal parts. if Enki (and that other being from Sirius or Pleiades) are the God of the old testament that metaphorically breathed life into/gave a piece of their spirit into Adam (caucasians/aryans) then it makes sense the remaining neanderthals would be a little torqued off about being "left behind", as it were, and why their spirits won't be returning to "the creator"; Enki (and the other being i mentioned).

this also all has to be considered in the context that the reptillian species were already here and established long before the Annunaki showed up. there might be something in neanderthal genetics that makes them more "user-friendly" to reptillians, and all the centuries/millenia of conflict between j's and every other human variant is a war by proxy. almost nothing is known about reptillians and their societies/philosophies and it's possible they have very long life cycles (individually and societally) and think in terms of millenia or even celestial eras.

it'd be really enlightening to know what the Nazis found in Antarctica.