I think most RP at the moment is still a little bit on hold, between the holidays coming up and the fairly recent launch of Shadowlands. That being said, kaldorei roleplay often pops up around Feralas, especially Feathermoon, and I’ve no doubt that if it isn’t an active hub as of now, that it very much will be in the coming weeks or months.
Beyond that, there’s this list here which might serve well (at the bottom of the first post):