[ghaff]

Short-lived, but there was at least one other 1960s vintage cartoon Asgardian series as well. https://www.imdb.com/title/tt0156221/

From my perspective, Norse mythology was maybe not quite as generally known as the Greek/Roman pantheon (outside of northern Europe anyway). But it was certainly not obscure--at least as far as the Odin, Thor, Loki basics.