Zardnaar
Legend
City of the Spider Queen in 3e had the 3e drow mechanical problem of them being NPCs down a CR due to the spell resistance, so they were less tough on attacks and HD and their casters were less powerful for their challenge rating, converting should handle that fine. Plus there was the 3e drain and touch attacks thing with a lot of incorporeal undead. Again converting might mechanically help those issues.
Ive mined CotSQ. Converted sone monsters. No idea where they are now.
Covid lock downs killed the Drow campaign.