Keeping in mind
@Essjay advice, I'll confine myself to the Moonlight Gourami,
Trichopodus microlepis. This beautiful gourami is peaceful but skittish, so it needs very sedate non-active swimmers as tankmates...though that rather applies to most gourami, but especially so here. It is also large, attaining six inches, and smaller fish may be seen as food. Males are, like all gourami species, territorial, so one with say two females would make a nice display, with a good cover of floating plants.
As for the other fish, nothing wrong with cories or kuhli loaches in general, but...the Moonlight needs higher temperatures (in the range of 77-86F) which will burn out the panda cories that need it lower. Depending how warm you keep it, most cories will also not fare well. They also need sand, as do loaches. And the Moonlight needs very low water flow in the tank, actually all gourami do.