Who is White?

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The Hajnal Line dominates as usual.

The Hajnal line links Saint Petersburg, Russia and Trieste, Italy. In 1965, John Hajnal discovered it divides Europe into two areas characterized by a different levels of nuptiality. West of this line, the average age of women at first marriage was 24 or more, men 26, spouses were relatively close in age, and 10% or more of adults never married. East of the line, the mean age of both sexes at marriage was earlier, spousal age disparity was greater and marriage more nearly universal.

Subsequent research has amply confirmed Hajnal's continental divide, and what has come to be known as the 'Western European marriage pattern', although historical demographers have also noted that there are significant variations within the region. The Western European pattern of late and non-universal marriage restricted fertility massively, especially when it was coupled with very low levels of childbirth out of wedlock. Birth control took place by delaying marriage more than suppressing fertility within it. Women's life-phase from menarche to first birth was unusually long, averaging ten to twelve years.

https://www.theatlantic.com/personal/archive/2011/06/the-hajnal-line/241134/

Western Europeans think differently. Note how the same divisions that existed then persist now, mainly because the Hajnal Line denotes the unbroken Nordic-Germanic Cro-Magnids, and everything else is a remix.

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Malindi, a seaside town by the Indian Ocean that was founded in the 13th Century, is 120km (about 75 miles) north-east of Mombasa and has been known as "Little Italy" since the late 1960s.

https://www.bbc.com/news/world-africa-56284827

Wops already remigrating themselves.

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Using genome-wide scans and individuals with all four grandparents born in the same settlement, we here demonstrate remarkable geographical structure across 8-30 km in three different parts of rural Europe. After excluding close kin and inbreeding, village of origin could still be predicted correctly on the basis of genetic data for 89-100% of individuals.

https://pubmed.ncbi.nlm.nih.gov/20571506/

The amazing precision of genetic history.