I'm assumign that what you're looking for is the suggested races - as any race (even the exemplars) *can* be played, we're looking for that short of them that goes list at the front of the book under the "Createing a Character" section.
You probably want to include:
gnome, halfling, dwarf (why are the short people always forgotten? ), elf, half orc just for the sake of completeness and/or prime immigration
I'd toss in in addition to those:
kobold (cause everyone wants a meepo)
wemic
cambion
mul (half dwarf)
The exemplars, like loths etc can be saved for the monstourous write up on the other end of the book And in that location a section on how to convert them into a playable race can be included.
We'd also need the exemplars. Granted, most of 'em could probably come from the Menace and Monster Manuals...
So, we'll need to probably have any of the creatures like the 'loths that aren't likely to be featured elsewhere too.