There also were two ~32 pp 3.0/3.5e books from Avalanche Press. The cover art looks like porn, but the content of the two is really quite good, if a bit minimalist. Ragnarak: Tales of the Norse Gods, and it's supplement, Doom of Odin, combined totaling 95 pp. Doom's still available from the publisher, but Ragnarok isn't.
- There's an Italian 5e version of Norse Mythology, I think, called "Ragnarok" or "Journey to Ragnarok", If I'm not wrong.
That line, Campaign Classics, has several volumes.
- There were back in the old days two excellent supplements, one for Rolemaster and the other one for Gurps, about Robin Hood. Now on drivethrurpg.com there should be a supplement called "Sherwood" or something like that, for 5e and for Pathfinder 1e.
Robin Hood (1987)
Mythic Greece (1988)
Mythic Egypt (1990)
At Rapier's Point (1993)
Mythic Greece's hero system characters include 3000 base point characters....