Christian nationalists, Identity Christianity, and Nazi's are strange bedfellows. They all want chaos to occur so they can take power. Also don't expect any rational ideology out of the groups. The Christian ones commonly have beliefs that the jews killed Jesus so they are bad (or at least very complicated), and also war Jesus is coming to smite his enemies (who seems to be everyone except the Nat-C's). Actual Nazi's have quite a lot of overlapping beliefs, e.g. racism, ideas about racial purity, not actually like the jews, or really anyone that is different from them.

I was raised in proximity to a lot of people like this and got to hear all their spiels growing up, and saw a number of them end up in jail for terrorism plots.