He is stated to have had partially Jewish ancestry and to have been homosexual.
Speculation still surrounds Otto Rahn and his research, including in claims regarding National Socialism and occultism.
"Among the colleagues of Wiligut was Otto Rahn, around whom there has been much mythologizing due to his esoteric expeditions ranging from southern France to Iceland. In particular it is because Rahn was a “Luciferian,” insofar as he believed that Lucifer, the “Light-Bringer” was a good spirit in opposition to the Jewish God Jehovah. His main book was entitled Lucifer’s Retinue: A Journey to the Good Spirits of Europe. Not surprisingly, such a topic provides plenty of scope for writers of pop-history in attempting to portray the Third Reich as a “satanic” conspiracy or as evoking “satanic” forces. However it is a Gnostic heresy rather than Satanism, such heresies regarding Jehovah as “Satan” and Lucifer not as Satan but as an enlightened antagonist. One can see something of the doctrine in the Anthroposophy of Rudolf Steiner, whose rather positive movement was unfortunately also banned in the Third Reich, despite Steiner’s antagonism to the same Masonic secret societies as the National Socialists. These heresies provided a fanciful basis for post-war Hitlerites such as the Chilean diplomat Miguel Serrano to develop a cosmological view of National Socialism that is “Luciferian” and Gnostic."
- Religion, Mysticism and the Myth of the "Occult Reich" https://codoh.com/search/?sorting=relevance&q=rahn