Results vary but Mbuna tend to intimidate and stress out Haps and Aulonocara. They won't get killed as they are not competition, but Mbuna can hurt the Hap/Peacock color and growth, and the point of a Hap/Peacock tank is to get strong male color.
You could get away with Yellow Labs but I wouldn't try Socolofi.
Not a good idea I have a peacock and hap tank I would never put any mbuna in that tank they are way too aggressive and I say mbuna with mbuna and haps and peacocks no mix of the 2. Trust me you will be much happier!