Can you get a clear close up of the albino? Does it have any color at all in the fins? A faint blue or yellow?
An albino Blueberry (which I am getting tomorrow) is white with a blueish sheen to it. An albino Greshakei is white with yellowish fins. A Ice White Cobalt Zebra is a white with fluorescent blue to it. If the store still has some from the same batch your chances are good of getting more of the same.
So many look so alike it can be really hard to tell. I make sure to write down the scientific name when I buy so I can go home and look it up to make sure that is what I got.
Your fish could be a Melanochromis cyaneorhabdos. Only you will be able to really tell. The Johani males are blue, females are orange. The cyaneorhabdos are the same color. I just suggest to watch it and if it gets too aggressive return it. All the Melanochromis species are really aggressive and best to stay away from until you have had Africans a long time. Another one to watch out for is the Demasoni. It is a beautiful blue striped fish, but you can only keep one or 12. It is highly aggressive towards its own kind so needs to be kept to a single fish or a lot of fish. I had a single male for a long time until it died on me. It was the sweetest fish on its own.
Try to pick fish that don't resemble each other. Example, if you get a blue striped fish the Jo may attack it because it looks too similar. Keep only Electric Yellow Labs, don't get any other yellow fish like a male Kenyi, that are yellow as adults. If males see another male that looks similar to it, it will fight with the new one.
My set up is very bright and beautiful. It is filled with the common fish store fish, with a couple I grabbed when they came in that are harder to find. I have the purple/blue of the Acei, the deep orange of the Red Zebra, the bright yellow of the Yellow Labs. I have a ice blue color in my Greshakei and a light lavender in my Hongi yet tho, its still young and a dark purple most of the time).
You would have a very beautiful display if you up your numbers of the ones you have except for the Johani. The Labs, Zebras and Acei will get along fine when they grow up. They will chase each other and have little wars, but that is the way it is with Mbuna, what makes them so interesting.