Clownfish, royal gramma, group of anthias (if you can feed multiple times a day). Kole, tomini or yellow tang. sandsifting goby. One of the dwarf angelfish. Aurantidorsalis fairy wrasse. Naoko wrasse, a leopard wrasse.
I have a hippo tang and deeply regret it. Too big for my tank. Love the Foxface suggestion but seek out a smaller variety. I believe the one spot doesn’t grow as big. White tail bristletooth stays smaller and usually has a good disposition.
Pearly jaw fish is my absolute favorite