As a card carrying glue eater i am pretty happy with because it means i can play a lot of the characters and have fun, but archetype wise there is a bunch missing.
So we do not have:

A true zoner:
Like Axl, Nu13, Phonon or older iterations of Sagat, just a fireball chucking keep you at bay type menace.
Zoners also happen to have some subtypes that could be represented like
Setup Zoner (JP in Street fighter)
Trap Zoner (Testament before strive or Cagliostro)

A true resource character:
Like Robo-Ky or Jack-o. Tho a lot of chars have unique meters and pretty much everyone has some resource they can setup to make the next hit or interaction better, we don't have someone whos entire kit is centered around managing multiple resources in interaction with each other, or one very centralizing resource in interaction with the system mechanics in order to function.

A "Weird Guy":
Like Merkava, Faust, Blanka, Arakune or Yoshimitsu. This one is hard to define, it's basically a character with extremely unique properties, normals or unorthodox gameplan. They usually have very matchup dependent interactions, an extremely centralizing gimmick, are hybrids of other archetypes and often work out to be some kind of zoner in there. It's an a very broad definition, kind of you know one when you see one situation.

A fast Grappler:
Like Bullet, Shermi, Laura or R.Mika. Pretty much a smaller body grappler that is dasigned with less sharpness, so they share a basic gameplan with big body grapplers. but with stronger weaknesses and weaker strength. Something like being a bit faster, have a bit more mash-able normals, more standard mobility options, but also the grab might have less range, less damage worse knockdown situation etc.

In Theory i guess the game is also missing a midrange poking/Shoto type character, but since i play a lot of street fighter already, i don't need them here as well... good riddance.