You know what's the irony in this?

Hitler (and others of the time), believing in the out of India theory, adopted an Indian symbol (the Swastika) as the symbol of Germany's Aryanism, whilst thinking of the Slavs as subhumans who had their genes mixed with Asiatic tribes in the past.
Turns out that the Indo-Europeans were Steppe people from the very land which the people he hated came from, which means that Slavs are more "Aryan" than Germanics are

Reading into what they looked like:

"The genetic basis of a number of physical features of the proto-Indo-European people were ascertained by the ancient DNA studies conducted by Haak et al. (2015), Wilde et al. (2014) and Mathieson et al. (2015): they were genetically tall (phenotypic height is determined by both genetics and environmental factors), overwhelmingly dark-eyed (brown), dark-haired and had a skin colour that was moderately light, though somewhat darker than that of the average modern European.[56][34][57]"

Not only they weren't from India, but they didn't resemble today's Nordic people at all. But if we were to talk about all the stupid nonsense that was nordicist propaganda of the time, we'd be here all night