If I were to really restrict/refocus this list, I'd slim it down to ones present in Faerun, since that IS the 5E baseline.
So, that would leave us with...
Gnomes (Forest, Rock, Deep),
Halflings (Stout, Lightfoot, Ghostwise),
Goblins,
Kobolds,
Grungs,
Kenku (Small only),
Aasimar (Small only)...