You can do a pair of Angelfish (or just one) and then some larger Tetras like Black Phantoms, Red Phantoms, Serpae, Longfin Serpae, Diamond, Black Emperor's. Or Emerald eye Rasboras, Cardinal Tetras, Bleeding Heart Tetra, Penguin Tetra. Or you can go with the Barbs and do Tigers, Cherry Barbs, Rosy Barb, Odessa Barb, Black Ruby Barbs. Though if you go with barbs, remember that most of them (except Cherries) are semi-aggressive so you could do a larger Gourami for a centerpiece fish or something along those lines.
Wilds: Wajok, Rutilans, Siamentorialis, Hendra
Leopards: Luna, Astrael, Dorian, Cullen, Gallifrey
African Fat Tails: Nox and Lux
Bearded Dragon: Stormfly