В чувашах несколько больше, я полагаю, но в них еще более поздние восточноазиатские примеси, свойственные тюркам.
https://www.biorxiv.org/content/early/2018/03/22/285437.full.pdfAncient Fennoscandian genomes reveal origin and spread of Siberian ancestry in Europe
Прошу обратить внимание на JK2065 ("финка эпохи железа"), она же DA236.
Она германка с "нганасанскостью", и, на самом деле, она стОит отдельного сообщения, потому что:
The alternative scenario is one according to which a group of speakers of Balto-Finnic were in such intensive contact with speakers of Pre-Germanic that they first became bilingual and then switched to Pre-Germanic, which in
the process became Proto-Germanic because those new speakers preserved a Balto-Finnic pronunciation when speaking Pre-Germanic. We have seen that Verner’s law in Germanic was a copy of Finnic rhythmic gradation and that the Germanic consonant shift may have been triggered by new speakers’ inability to cope with the difference between voiced and voiceless plosives.
So the developments in the consonantal system are by and large in favour of Finnic speakers switching to Germanic. Now let us consider the vowel changes from this perspective: was there anything in the Pre-Germanic and Proto-Germanic vowel systems that Balto-Finnic speakers would have difficulty coping with, so that they could leave a Balto-Finnic accent in Germanic? The answer is a clear no: both the Pre-Germanic and the ProtoGermanic vowel systems are subsets of the larger Finno-Saamic and even larger Balto-Finnic vowel systems. On the basis of their own linguistic background, therefore, Balto-Finnic speakers would have no diffi culty in pronouncing Germanic vowels more or less correctly as native Germanic speakers did. In other words: if Finnic speakers switched to Germanic, the
absence of any noticeable effect on the Germanic vowel system is entirely as expected. This clinches the decision between the two scenarios about the nature of Germanic-Finnic language contact: in all probability, Balto-Finnic
speakers switched to Germanic and introduced a Balto-Finnic accent into Germanic.
A Balto-Finnic accent is what defines Germanic: there is no Germanic without a Balto-Finnic accent.https://books.google.com/books?id=MUVJAgAAQBAJ&lpg=PP1&hl=de&pg=PA158#v=onepage&q&f=false