These two groups just don't seem compatible, no matter what the EU elite heathen desire.
“to speak Finnish? Or Icelandic, a mildly related language?”
Finnish is very different from Scandinavian languages - Hungarian is its closest relative. Like the Hungarians (Huns), Finnish people came from the steppes of Asia.
Finland was ruled by the Swedish Empire for a couple of hundred years, and adopted a lot of Scandinavian cultural traits.
The Finns are not related to the Swedes/Norwegians/Danes. Those groups are offshoots of Germanic tribes. The Finns are more like eastern europeans with some Suomi thrown in.
IMO far right in Europe just means tribalist. They can be complete communists but if they want to keep their tribe synonymous with nation they’re called far right. From what I see Finns are very tribalist.
With particular respect to the United States, any group or individual could belong here if & only if they will assimilate. Assimilation may mean many things, but learning the language & obeying the laws of the host country are certainly two essentials. There is more, but if an individual or a group cannot do these things then they have no reason to be here,should not be allowed in to the country, or if they are already here they need to be immediately deported. That of course can lead to problems. This individual or group, by his or their actions/ideals may not feel welcomed in any country. Then it’s just tough toenails.
Finnish is not at all related to Icelandic - they are from completely different language families
Finnish, like Estonian or Magyar (Hungarian) or Mari (in central Russia) are Uralic languages which may be distantly related to the Turco-Mongolic-Korean languages (disputed link)
Icelandic is old Norse - it's Northern Germanic, closely related to Danish, Norwegian and Swedish - in fact the 4 could technically be called dialects of each other and they belong to the North-Germanic sub-branch of the Germanic branch of the Indo-european family (languages from Gaelic to Bengali)