well I actually am a white nationalist and I've watched nick podcasts some...and i frequently encounter a lot of his followers. I know what I'm talking about.
If anything nick is just a catholic integralist. That means he isnt anti white...since he doesn't have a racial world view. Just a religious world view. It also means he cannot possibly be a white nationalist since the majority of catholics are not white, and the majority of white people are not catholic.
He has tried to court white nationalists some but its basically from the perspective of 'at least I am not anti white'. But not being anti white is not sufficient to actually believing white people should have sovereignty in their own state