I say do a nice group of 6 angels (if angels are your thing)
going along with that, I'd also throw in 6 pearl gourami's and then some sort of school of fish (I like rainbows personally and I would do 6-8 of those or you could do like 12 of some sort of tetra) and then a few small plant safe pleco's or ottos or something, maybe add a few mystery snails as well
it also depends upon your filtration and the look you are going for, I personally find myself with tanks that are stocked rather heavily just cause I feel like I have the issue of not enough tanks for all the things I want lol, but I manage to keep everything growing and healthy so I'm not overly concerned, and I don't have aggression issues because everyone keeps themselves in check.
I have a 75 gallon planted as well that has 6 angels (3 grown, 3 growing), a full grown blood parrot, 5 pearl goruami's, 3 rainbow cichlids (tbh, I'm not sure what I want to do with them, I might get rid of one of just replace them with something else or just remove them all together and just keep them, I'll decide that over time though), a geophagus brasiliensis, an endli bichir, an albino senegalus bichir, and a pleco that I can't positively id that has maxed out at 7" and lets all my plants survive. Also, mystery and trumpet snails galore.
however, I am running a a lot of fast growing plants and am making this a high tech set-up
I also have 2 eheim 2217's on this bad boy, and my water reads well, only issue is a lot of floating debree but I blame the fact that my gravel gets turned so frequently by the fish just swimming around near it. That and maybe I need more flow or to play with my intake's location but that's another story lol. I also am doing 50% water changes weekly, have gotten away with less however, but I'd like to make sure it happens weekly that way when this goes full blow high tech (i have the lights for hi tech and will be buying the ferts soon, but CO2 will sadly have to wait
) I want it to be run like clockwork