Solfan

They definitely crop up on most Worlds on Crystal, There aren't as many but you shouldn't find it hard to find at least a few. I've even been to a few RP events on other Worlds, I think the housing issues make other Worlds on Crystal quite appealing since you can get a house there with more ease than you could on Balmung/Mateus and still cross-visit to the bigger ones on other Worlds.