Kurotowa
Legend
Crawford dropped that their target is two player races covering a given niche, to give players a choice. His example was orcs and goliaths as the two "big and strong" races that get Powerful Build.I'm glad aasimar are in (makes sense if tieflings are), but I'm honestly surprised that goblins aren't in the PHB- though maybe they're afraid of being accused of ripping off PF2e.
Generalizing from that, we might see tiefling and aasimar as the two planetouched races. And we can definitely tag gnomes and halflings as the two "small build" races. Adding goblins would be a third, and that's probably overkill. To promote goblins to a PHB you'd probably have to demote gnomes, like 4e did.
Personally, I'm content with the goblinoid trio being the poster children for what a supplement book should cover. Not quite PHB material, but first in line for the expanded roster.