The lighting is really gonna determine what you can and cant have, the rest is down to water quality.
For starters try any leathers, mushrooms, toadstools, etc. For lower light levels you could also try a sun coral - very nice looking and will cope in (relative) shadow.
The depth of water is very important when choosing also. for halides 150 watt should punch through to about 18", 250 watt to c.24-30" and 400 watt for reall deep tanks.