Two worthy, missing cases -
“Gormenghast” series, Mervyn Peake. A bit of an outlier, I grant. A most unconventional fantasy.
“King of Elflands Daughter” and etc., Lord Dunsany. Everyone copied him, arguably including Tolkien, but he did all sorts of things first, and often more weirdly.
Thorne Smith wrote some really funny fantasy. He’s probably best known for “Topper”, but things like “Night Life of the Gods” and “The Glorious Pool” were even better IMO.
Also: “The Worm Ouroboros” by E. R. Eddison