Correct. About 20k for morphology, and about 5-8k for skin and hair, and about 4-5000 for the most recent expansion, with Poland-Ukraine-russians being the least outbred, except for northern russians who have a significant finnic (western polar) component.

Studying East asians is extremely interesting – parallels are unmistakable.

If a civilization (race, subrace, tribes) went thru the meatgrinder of ice age hunter gathering and winter farming, they lost their underclasses. If they went thru manorialism they are left with only middle classes.

Downward redistribution of reproduction in both far east and far west.