Expertise is very good however. Who doesn't want double proficiency on Perception, Stealth or Persuasion? I'd put the race in the ballpark of V.Human or H.Elf. Powerful, good, but not broken. I really like it.
Blinkdogs almost seem made for Moon Druids, because your wildshapes might actually increase your options for doing things, and you've got slightly limited casting anyway. The extra fighting styles look great too. Especially not having the "melee weapon attack" thing attached to all of them, but with light/simple/finesse attached to your bite, so as not to limit options and classes.
Elephants aren't bad. Pack-mule and grapple masters or a mini-Sage. Kind of cool. I'm trying to work out some way of making them weird with Mage Hand (especially Arcane Trickster MH).
The Genasi changes are cool. Just rounds out the weaker ones nicely, while staying in character.
GW Halflings are really good. Telepathy and a free Cutting Words is ace. Another nice option for the race, but not OP at all. Mini-GOO lock in a can, kind of.
The spiders might be quite powerful. I love it that they're original, but 10' reach and free ropes or spider climb is pretty good. They're begging for Polearm Master and a Quaterstaff due to the wording of the feat (see the Fun Finds thread for Giant Octopi with a stick for reference). Creepy, funny, and awesome. Not as bad as EE's birdmen anyway, so not OP.
Half-Drow are fine. Versatile, but not broken, on the positives or negatives of the race. A good solid take on them (and far more usable than proper Drow).
I'll go through the rest later, but they all seem really well thought out. Excellent work!
I'll see if I can make something stupid and broken soon (looking at spiders dubiously)
Bat Werelings are also very good. Maybe OP. Blindsight is friggen awesome, and with limited flight/shapechanging/possible mini-telepathy, it's a very good package. Same with Ravens, due to the ability to speak while in bird-form. There's no real reason that you can't do verbal components of spells as a Raven, usually an 18th level Druid ability, and you have limited flight that level scales early too. It's not as good as those stupid EE birdmen, but it is very good still (fortunately Ravens and Bats aren't amazing as forms go, but they're not exactly bad either).