The Iranians are from the cradle of Caucasian-ness, but I believe that Hitler's boys invented a mythological basis for THEIR Aryan nation. Those black haired, blackeyed Persians wouldn't have fit into the blondhaired blueeyed prototype.
Iranian is an offshoot of the word Aryan. I don't know how much more of a connect one would need. Did you google the Grand Mufti?