“mongrels” are not my words. That’s a cut & paste from W, the source I linked to.
That previous post should have been: “That alone does not make them a race, subject to “racism”.”
Looks to me like they’re grouped under 1 of the 5 broad categories, called Caucasoids, along with a bunch of other “distinct populations”.
The distinct categories in the chart above did not predominantly come about through mixture with different population groups - but through reproductive isolation within their own group.
Iranians are a distinct population group. Distinct enough to have their own name for thousands of years for that population group “Persian”.
If you want to use an archaic system based upon the simplistic thinking that there are and can only be five categories - and the idiocy of thinking any distinction among those five categories is through ‘mongrelization’ - you can go ahead.
But let us not pretend it is either accurate or scientific or based upon any actual data.