Hi, fish like me-
so it sounds as though your tank has finished cycling, now you want to know what you can add.
I would recommend deciding first exactly what fish you want to keep and then add them a couple at a time, least aggressive and most hardy first. Allow a few weeks between new additions to allow the biological filter to catch up with the new load.
Same goes for corals; add them a couple at a time, most hardy first. Some good choices to start off with in a newly cycled tank would include most of the photosynthetic soft corals, zoanthids, and corralimorphs.
I am assuming you have live rock, a decent protein skimmer and enough light to keep corals.
Good luck