Sweden is such a monoculture that when you look at Swedish demographics all Swedes are considered the same and you only count the immigrants as different. The second largest group of immigrants after Syrians is Finns, so a very similar culture. In the US if you look up demographics you barely see the 13% of the population which is foreign born as an *. Instead you get 17% hispanic, 13% black, ~62% white, 5% other. There's no accounting for the difference between a Mexican and a Cuban or a German and an Italian American. If you looked at Swedish demographics the same way it would be more like 95% white, 5% other. The largest single Church in the US is Baptist which accounts for barely 10% of the population. Meanwhile the Swedish National Church accounts for over 60% of the population, the second largest group is "unaffiliated" at 30%.

Norway is not significantly different when looked at in a similar light.