There are many many different breeds of glider. Squirrel gliders, mahogany gliders, feather-tail gliders, etc.
However, the ones we have in the US are almost without exception (the only exceptions I'm aware of are 2 squirrel gliders) sugar gliders. They look different, yes. They have different traits and slight differences, just as you look different from you uncle or your neighbor. However, they aren't different breeds or types. There are different colors - but the pictures you have posted are all Standard Gray sugar gliders. Whether they have rounder faces or longer faces, they are still the same species, breed and type.