The sjw review by eurogamer on Kingdom Come: Deliverance

[Pemalite]

DonFerrari said:

Still there is someone that can't accept that the population from 1400 Bohemia would look different from a mixed population of today, and that 1400 Europe tribes would be reasonably differentiable from one another.

Of course. There is certainly deviations today.
Allot of the Aboriginal Australians have significantly lighter skin here than their ancestors because of mixing with those of European decent... And that is on a much much much shorter time scale than what you are describing.