Originally Posted by
Mina
Estonia at the first place doesn't imply that Yaroslavl or Tver or any other Russian oblast is "more Finnic than Slavic". While it's difficult to precisely quantify how much Slavic and Baltic ancestry modern Estonians have, they're definitely not some kind of 100% pure Finnic people.
Yaroslavl, Tver, Ryazan, Kaluga are all genetically very close Central Russians, and slight perturbations in admixture lead to a flipping/rotation between Estonia and Belarus as their closest pop. But for all of them Belarus is consistently closer than Finland (Finns also have a complex ancestry — a mix of Finnic, Saamic and pre-Germanic Battle Axe Scandinavian ancestries — which means that distance to Finns is not a reliable indicator of "Finnicness" either).
tl;dr this thread is about genetic similarity (or dissimilarity) of Central Russians to modern European countries, not to Iron Age.