Tank 1
Yellow lab, albino something and unknown
Tank 2
More of the same
Tank 3
P saulosi, green tiger barb
Tank 4
P saulosi, melanochromis auratus, yellow lab, green tiger barb.
All are mbuna except the barbs. All are probably hybrid. Peacocks have higher narrower bodies, swim further from the rocks and fight less. It depends on what you want. Hybrid may or may not be a bad thing. Look into it and make your own decision.