Discus and angelfish are cichlids!LOL. That sounds about right.
You may know of species I don't, but from what I've heard, I personally don't trust any cichlid that I know of to be a community fish. The only ones who aren't the ususal aggressive a**holes who will eat/bully innocent community fish are too timid, sensitive, and fussy to do well in my tanks (eg: how can discus be expected to get even 1 pellet or bloodworm when there is a pictus catfish?).
As for the thread topic, I suppose kribs could be an alternative to emperor cichlids.
Many small South American cichlids like rams and apistos tend to make great community fish. Many of the medium sized souths and centrals are also not as bad as their reputation suggests given a proper setup.
But the big bruisers and mbunas…yeah they’re psychotic in most tanks, at least when put with community fish.
Emperor cichlids behave more like the hap cichlids of the rift lakes to my knowledge, kribs and the African riverine are more like ca/sa cichlids. It’s hard to compare kribs to much, as they look so different, but if anything they really are just mini amantitlania cichlids to me. Very much the same as far as their potential for aggression goes. Peaceful until there is fry involved.