If you do some hunting there is quite a bit out there. There is a rumour that one of the major companies may be coming out with a 54mm fantasy line, but that will be a while.
To check out a LOT of manufacturers got to redlancers.com. They are a mini dealeer and carry lines from many manufacturers and have stuff froom companies that are no longer in production. I\'ve used it as a resource many times, not to mention making some purchases.
2 of my favorites are Andrea Miniatures and Pegaso. There is a ton of stuff out there in white metal and resin. Good luck with your explorations!