Scandinavian and Icelandic genetics?

[21993]

Among Icelandics, Swedes, Norwegians and Danes, which 2 is the closest to each other?

[Östsvensk]

The difference between them all is so negligible that they cannot even be distinguished on a PCA plot. Icelanders underwent genetic drift, which likely would affect the Fst distance and how they plot. Probably Danes and Icelanders, if we take into account that they have no or the least Finnic ancestry.

According to a study called Novembre et al 2008, Swedes were the closest to Danes and North Germans.

https://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fnature07331/MediaObjects/41586_2008_Article_BFnature07331_Fig1_HTML.jpg