Top left is an Orange Blotch Red Zebra.
Red Zebra is the small orange one.
Metriaclima callainos is definitely the Big Blue one.
White fish is an albino Pseudotropheus socolofi
Dominant male auratus horizontal black striped one.
The smaller one am not 100% sure I cannot see from the photo but does it have a shiny spot on the gill plate at all?
It still doesnt really change much in terms of stocking. It is still aggressive fish.
Welcome for the help, one thing I know an awful lot about is Lake Malawi cichlids.
It is nearly impossible to sex red zebra from pictures alone, you would have to vent them to sex them correctly...thats the joy of keeping monomorphic fish.