i personally think its deers and reindeers, they live on the north pole AKA Hyperborea, they live in european types of forests, their fur is reminiscent of a brunettes hair color, they are associated with cold and snow and are allies of Santa Claus, who is pretty much a modern reinterpretation of the sky father figure of multiple european pagan mythos as well as Christianity.
what other species could be equivalent to aryans too?