During my time as a DM I have had rangers ask me which creatures fall under what races so I have decided to compile a list for you, the current list is as follows:
Underdark beetle - outsider
Myconoid - plant
Fungus Keeper - Construct
Bugbear - goblinoid
Torglodyte - Reptilian
Gol - goblinoid
Slime - Monstrous
Gravetouched slaves, skeletons and zombies (including azatars) - undead
Carrion crawler - aberration
Azer - dwarf
Azer firebeast - reptillian
stone giant, elder stonegiant - human
Chuul - aberration
Aboleth thrall - undead
Kua Toa - feytouched (lyrical)
Kracken? (No idea, I crash when I attempt to check it)
Ropers? (No idea, I crash when I attempt to check it)
Derro - dwarf
Umberhulk, greater umberhulk - aberration
Black Pudding - elemental
Grimlock - human
Beholder - aberration
Bloodfist tribe - halforc
Earth elemental - elemental
Mephits - outsiders
Firenewts - reptillian
Minotaurs - mad seer warrens - monstrous
Minotaurs - minotaur maze - - aberration
NPC-duergar (non-hostile) - dwarf, human
Duergar (hostile) - dwarf
NPC-drow (non hostile) - elf, human, dwarf
Drow (hostile) - elf
drider - aberration
elder brain tentacle - aberration
Quaggoth - monstrous
Meazel - monstrous
Bombardier beetle - vermin
Keep in mind that many of these races are way off what they ought to be and as such may one day get fixed, if that happens and you have a ranger of an underdark race already, then you are entitled to a free rebuild to change your favored enemies (most easily done with featswaps), the rule you fall under in such a case is this:
1. Rebuilds for characters who are severely affected by server updates may be allowed a free rebuild, pending DM approval.
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