There are three main categories of genetically modified species from Earth.
1) By the ancients, Vargr, Chokari, one group of dolphins, Genoee and many more human variations.
2) By the Vilnani, the Jonkeereen are the only example I know of.
3) By the Solomani, bears, apes, orca, more dolphins.
There might be a possible fourth category, humans that have evolved naturally from base humans on other worlds.
Other things to consider
a) in Behind the Claw there is a note that not only have bottlenosed dolphins been uplifted, the pacific whiteside dolphin has as well.
b) Aliens of Charted Space 1, lists different subspecies of Vargr. It doesn't go into much detail, but I remember one is blind and very psionic.
c) Some races of humans taken by the ancients were not from Homo sapiens but from neanderthals or other species or subspecies. Example the Suerrat (I think).
I had started something similar and put it into a spreadsheet, that way you can have as many layers of subcategories as you like.