Russians claim this what what the original Uralic look like from 6000 BC...
I dont know what research that is that you are referring to, but according to current theories, Uralics began expanding from their Urheimat in the Volga-Ural region as recently as 4000 BC. The Samoyedic groups were the first to depart, going East.
Of course, where the proto-Uralics came from, no one knows, because the proto-Uralic language can only be reconstructed to the time of the Volga Urheimat. They might have originated from the East, and in that case were originally mostly Mongoloid, just as Turks (although the proto-Uralic migration is far more ancient). That is just speculation though.
The Uralic family was very expansive and I doubt that the original Uralics were completly assimilated into the existing populations, given how wide-spread the family is. If the Urheimat-Uralics were mongoloids, I would at least expect a lot more Siberian admixture in Estonians and Latvians. Of the Finnic peoples, only the Saami can be said to have a clear Siberian component (which they have donated to the Finns, in particular the East Finns). Even a Komi or Chuvash-like origin seems a bit unlikely to me, a Mordvin-like origin not being impossible though.
Even though any kind or origin is of course possible, the most plausible is probably an origin rich in caucasoid the NE-Europe component present in the region.