The thrust of your argument is pretty shallow, if I do say so. You appear to be basing "history" on the last 100-150 years. As for WW2, Italy is a complicated case, but at last call the non-RSI-occupied portion was on our side. As an aside, who's side were the Dutch, Danes, Swedes, Norwegians, and Belgians on? Between them they managed to field 5th SS Wiking, SS Grenadiers Wallonien, 11th SS Nordland and 6th SS Mountain-Nord, and many other units that I can't recall off the top of my head -- hundreds of thousands of men from occupied countries were quite happy to lend a hand to the Germans. Point being, "the Italians were mostly Catholics and they helped the Germans, sort of, in WW2" is a very poor basis indeed for condemning the Catholic Church.
I would clarify that Sweden was never occupied, but merely allowed Germany to use Sweden’s railway system to support the war in the East.