I think we need all the races/sub-races in the player's handbook for starts. The missing races from Early Access include:

Dragonborn
Gnomes
Half-Orc

And, if they have all of the required spells, it should be easy enough to copy/paste the Tiefling model and add all of their sub-races:

Baalzebul
Dispater
Fierna
Glasya
Levistus
Mammon
Mephistopheles