If so then you might add Tanya Huff's The Fires's Stone. Chandra and Darvish (2 of the 3 protagonists) and the countries where the action is set are all distinctly "non-European" and I'd say South-Asian influenced, but definitely secondary world created cultures rather than an actual country or region in disguise. The most prominant feature of the world building is the magic system / religion and I can't spot any real world belief system behind it, although there may be something I'm not aware of.

(Not using your form right now as I'm not sure how far the fandom qualifies. I'm afraid I'm also unable to point to any meta as I've neve seen any for the book.)