Jozef Tiso was catholic priest and president. He presided over deportation and ultimate killing of Slovak Jews. This was very much Catholic project, where hate toward jews was preached from the churches. And it was openly nazi, including Hitler salutes. Significant majority of government were Catholics, most priests (its catholic country) and high profile pushers for the deportations were Catholic priests. The arguments for the deportation were both national and religious.

The Catholic Church was instrumental rather then objecting.

Also German nazi had appeal to conservative Catholics in Germany, they were one of the constituencies voting for them. You had some nazi into neo-paganism, sure, but the cross with conservative Catholics was real.

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And like I said, recently excommunicated group of priest was founded by a famous French nazi. They were hiding him for years after the war.

Current pope is definitely not a nazi, just for the record. Absolutely not, he truly sees races as equal and poor as equal. Nor he is left wing as some say, he is conservative without crossing to far right side. But he also makes uglier undercurrent in catholic church fairly angry. Not counting Vance here btw, he seems to be in a very small weird mini group of his own.

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Sparta was fascists, but not really into race science. That was discovered only later. If they were racial, they would be better able to keep their numbers - but instead their system ensured the amount of citizens was smaller and smaller.