Speaking from personal experience (90g 24" deep tank, 2x55W PC light), in the upper half of the tank you can keep:
white xenia, anthelia, GSP, BSP, yellow polyps, bright red mushrooms, hairy mushrooms, Kenya tree (capnella), branching hammers and frogspawn, candycane (neon-green tolerates lower light, but closer to the top others also should be OK), light-green scolymia, blue algae ochtodes.
Lower - Capnella will live, but not grow, like mad; sun coral (tubastrea, will need a lot of feeding and may pollute water), other non-photosynthetic corals (require good feeding and the tank will need a good filtration), hitchhikers - feather dusters, sponges, turnicates, polychaetes.
Doable...