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Razib Khan wrote a piece on Hungarian genetics on his substack.
https://razib.substack.com/p/hungarians-as-the-ghost-of-the-magyar
(In case you can't read it and it's subscriber only or something, here's an archive: https://archive.is/HTAPk )
tl;dr: Hungary is a meme, genetically Hungarians were more or less wiped out by Mongols and Turks by 16th century