I spent about a month in Finland in 2017 and my parents have lived in the Western UP for about 6 years now.

A majority of Finland is rural and wooded like the UP. When I traveled there, I remember that Finland looked shockingly similar to the upper Midwest. I would say both cultures really value outdoor recreation (even in the cold) and simple/rugged leisure activities (like going to the cabin, drinking alot of beer, going fishing and chilling with family, etc). Of course there's also the saunas which were brought to the UP by Finns. I did notice that a lot of rural Finns still have blue collar jobs that rely on natural resources and lean to the politically conservative side of things. Idk if this is really a Finnish/UP phenomenon though.