The Croatian Ustae and Romanian Iron guard were explicitly Catholic Fascist movements allied with the Nazis. On the other hand Franco not only refused to join the Axis, but accepted refugees and refused to let the Germans take Gibraltar. (Some have argued that this is because Franco was a Moranno, but this is meaningless. He was a Catholic.)
And Hitler was a great admirer of Pilsudski, even making a point to post an Honor Guard at his grave after the Nazi invasion of Poland.
Which begs the question, What if Pilsudski had lived in 1939? What course would they had taken with regards to Poland. Hitler knew of Pilsudski’s hatred of the Russians and might have tried to make a deal with him.
He also refused to join Hitler in the war, and refused to enact the anti-Semitic laws the Nazis tried to push on him.
The Romanian Iron Guard weren't "explicitly [Roman] Catholic". (Very few Catholics in Romania, then or now.) Romanian Orthodox, maybe.