I know the angel wasnt your choice. Sorry if what i said came off wrong, i only ment you have seen how they get when a fish they dont like enters their territory. With many larger salt fish (angels, tangs, ect) territory is often defined in meters so there is no escape for intruders in all but the largest tanks. It is true that there are no hard rules. Just like the valintini puffer for example. I have had three over the years. One was absolutely the sweetest fish ever and wouldnt hurt anything, one was as dumb as a rock and would pick at a snail occasionally when he noticed they were there, and the third was EVIL. So we have to generalize behavior the best we can. I say the chromis are very peaceful until they grow up. Then large schools fracture into power struggles over mates. They wont physically bother other fish (usually) but all the bickering among themselves can stress very delicate sp. I would add your wrasse and fire fish before anything else on that list and see if the clowns will accept them. Clowns are also territorial but normally only over a small area. After those peaceful fish have a month or so to settle try the cardninals.
