The main point of Nazi ideology was to build on already existing features of the mainstream culture. That's how you push people into doing extreme things, by making them seem to be just banal extensions of what their existing culture was leading to anyway. The main religious influences were therefore Christianity, plus Norse and West European mythology, which they could interpret metaphorically just as much as was needed and no more to justify their ideas.

To that they, especially Hitler himself who was a master of it, added the old political trick of, if you stand for nothing you can appear to stand for everything, as long as you use the right tone of voice. So that if he was talking to the trade unions, he would talk about defending workers rights against grasping bosses, and if he was talking to capital, he would talk about defending capital against demands for tax funded projects.

It was a trick which in resent years was employed wonderfully, by our prime minister T. Blair. ( Perhaps the most truly evil creep to run a European country since the Nazis. But that is getting of subject.) The point of both tricks, was to make the victims of the brain washing think that it was there own ideas that were being presented to them, and reinforced. The old con-mans trick, of make the mark think that the plan is their idea.

That is exactly why it was important not to go too far out into new ideologies, or fanciful cults.