You mentioned a 75g tank in another thread. Is that what these are going in? How many species are you looking for? You could 6-8 of each of the above and call it, I wouldn't add too many other species unless you're looking for pure variety.
Blue johanni could be an option, white labs (could hybridize with yellow labs, but there's a chance any mbuna will hybridize with other mbuna), P. williamsi are others that look distinct from what's shown above.