Elvis called himself a Christian too. Elvis was very much into the occult and a reader of Blavatsky's work.

Regarding Hitler's racial ideas, look at this from Blavatsky:

In her esoteric work, especially The Secret Doctrine, originally published in 1888, Blavatsky emphasized the concept of races as paramount in the development of human history. According to Blavatsky, there are seven root races of mankind, with each root race containing seven sub-races. The present root race is the fifth, the Aryan, and was preceded by the fourth or Atlantean race. The Aryans evolved from the fifth sub-race of the Atlanteans.

And look at the work of Himmler. Tell me where in here, you find anything resembling Christian doctrine:

The subhuman – that biologically apparently same shaped creation of nature with hands, feet and a kind of brain, with eyes and mouth, is nonetheless a totally different, a terrible creature, is only an approximation of man, with human-like facial features – spiritually, psychologically, however, standing lower than any animal.

That sounds much more like Satanic Talmudic Judaism than anything in the New Testament.