Given his views on immigration, his economic nationalism, and his volkisch romanticization of Northern European peoples, I'd say he'd be a good fit for the Danish People's Party, the Norwegian Progress Party, and Sweden Democrats. Still, I'll grant that his views on gun control might be a bit out of place in those parties.
Sanders does not romanticize Northern European peoples but Northern European welfare states, and I am not sure how this is not incredibly obvious. The point with DF, SD and Frp is that their support is mainly (particularly in case of the former two) based on anti-Islam and anti-immigration views. The same goes for other Western European radical right-wing parties. Sanders is not at all like that. Sanders is all about BLM and social justice, the exact opposite of what radical right-wing parties stand for. In regard to electorates, Sanders' electorate consists of progressive college students. European progressive colleges students hate DF, SD, Frp and the like.
Btw, his views on gun control would not be that much out of place in some of these parties: even if it is something unusual, these parties' electorates would not really mind so much.
I actually can see Hillary in CDA (Christian dems). I believe they support gay marriage even though they voted against in 2001. Hillary seems to be religious and apparently only started supporting gay marriage in 2012 or so, and economically speaking she probably would be centrist here (like CDA).
Yes, CDA officially supports SSM. It wouldn't be that strange of a thought, apart from the fact that Hillary and the Democrats are all about "progress", which would be a little bit weird in a CDA context. But I agree that most of her views, in and of themselves, would not be so much out of place in the CDA. Still, D66 seems a better fit.
