Quickleaf
Legend
IIRC the planar races in AD&D Planescape were Bariaur, Githzerai, and Tiefling in the Planescape Campaign Setting boxed set.
Then Planewalker's Handbook added Aasimar and Rogue Modron.
Githyanki appeared in the Astral Guide.
And there were 2 oddball races in the Ethereal Guide... the Nathri (small fierce clannish infiltrators/raiders of demiplanes) & the Neth's Child (flesh golem-esque spawnings of a specific demiplane).
I didn't play much 3e, but I looked up the Planar Handbook, which I think was the closest to a Planescape update, and it has a bunch of new races (omitting the powerful/level adjustment races)...
Then Planewalker's Handbook added Aasimar and Rogue Modron.
Githyanki appeared in the Astral Guide.
And there were 2 oddball races in the Ethereal Guide... the Nathri (small fierce clannish infiltrators/raiders of demiplanes) & the Neth's Child (flesh golem-esque spawnings of a specific demiplane).
I didn't play much 3e, but I looked up the Planar Handbook, which I think was the closest to a Planescape update, and it has a bunch of new races (omitting the powerful/level adjustment races)...
- Buomman (astral humans, more or less)
- Mephling (small mephit related version of genasi)
- Neraphim (slaad... that aren't slaad?)
- Shadowswyft (a lot like shades, the human equivalent of shadar-kai elves)
- Spiker (bladelings... that aren't bladelings?)
- Wildren (there was an UA with something like this celestial beast-folk)