If you can find them and "If" your tanks are mature with excellent water quality, you can get a Electric Blue Dempsey.
They are community compatible, however any tankmates that can fit in their mouth will get eaten, e.g. Neon Tetras or such.
They don't get quite as large as a Jack Dempsey, they are not even near as aggressive, but they have a reputation as as hard to keep fragile fish.
Jade eyed Cichlids also do well when kept with similarly sized fish.
Bolivian Rams are a very good choice, get atleast 3-4, Bolivians do best when they have have a school of dither fish such as Neon Tetras or such.
They can be very skittish and shy without a school of smaller fish advertising that the coast is clear, no danger, then they are very active.
Same as above goes for Checkerboard Cichlids, which are attractive.
Kribensis are nice too.
Discus and Angels do well together, both are Cichlids.
The Discus are best kept by experienced to very experienced aquarist as they are very water quality sensitive.
There's a few for you to think about and research.