You're giving them a bit too little credit. At least the alt-rights that I occasionally chat with certainly do not see the europeans as a monolithic block. Only central european and nordics are considered "true aryans" while eastern and southern europe are considered second class at best and you'll find slurs like "olive niggers" too.
There even are neat infographics about various genetic markers associated with different populations.
There even are neat infographics about various genetic markers associated with different populations.
They do study their own propaganda.