There are plenty you can add, but please don't think that your clowns will host right away. They might either not even notice it, or take to it and stress the coral out so much it shrinks up and dies later on.
But here's a few off the top of my head..tree corals, leather corals, mushrooms, polyps (green star, yellow, etc.), xenia (a couple types), carnation coral (more of a filter feeder..MAY not be the best starter for most)...umm....that's all I can think of right now.
I hope that helps, i'm not good with remembering good soft corals off the top of my head.
I'm tired of getting pointless messages. If your going to start a conversation or ask me something, keep up with it.