From DNA, sure, you can figure out a probability for attached/detached earlobes and different pigments.
Why did ancient persians look like white people?
Middle eastern people are an offshoot of caucasian people in a way, the most accurate assessment is that continuously there was a population stuck in Caucasus since Paleolithic and every time there where favorable conditions waves from Caucasus would emerge and contribute to other populations
Proto Indoeuropeans as I'm sure you know are also product of breeding between bronze age Caucasians and Don river European populations
Caucasus still holds some of the oldest ydna branches including the first j2 subclades as well as G2a that is basically gone in the entire world except for central and west Caucasus
>stole culture
Are you a literal nigger?
I'm not even saying in a derogatory way. Cossacks culture isn't autochthonous and Cossacks as an ethnicity are turkified slavs with Circassian military tradition.
They looked like tajiks or pamiris. They were genetically tajiks too.
I mean, a lot of modern Persians are whiter than Italian-larping Americans.