In my community tank I have 6 discus, 40+ rummynose, cardinals, 9 sterbai corys, hatchets, 1 large 10cm male bn, king tiger plec, tiger plec and chocolate zebra.
They all exist peacefully, everyone manages to get food. I feed bloodworms, shrimp pellets, spirulina discs and tropical granules plus have driftwood in the tank and they are all plump and healthy. I just make sure that the food is spread throughout the tank i.e. behind the driftwood and plants so they can eat in private if they wish.