You have tons of options, just not many "big fish". The appeal of the smaller cichlids is in the fact that you can watch them breed and raise their fry without having a massive tank, needing a divider, and you can keep tetras or livebearers with them. I'll give you the genus name, you can google the genus to find the species in that genus. I threw in some dwarf species just so you know they are out there. You could do a pair of any of these fish, more with the smaller species. I typically buy 6-8 individuals and let pairs form naturally, then remove fish as needed.
Archocentrus (multispinosus are one of my favorite fish, the most fecund CA IME)
Cryptoheros
Thorichthys
Andinoacara (Only the smaller species, I typically do not like man made fish, but the Electric Blue Acara is popular now)
Nannacara anomala (Second favorite, females are a force to be reckoned with when guarding fry)
Laetacara
Apistogramma (I would stick with cacatuoides)