Ngl y'all...
While I suppose it's possible, aren't the odds of getting another Capcom character quite slim?
The Pythra Mii wave bombarded us with Capcom Mii Costumes. Yes, I'm aware Sakurai stated that this is because of the upcoming games at the time.
I mean without a doubt it's probably gonna either be Phoenix or Dante, but still...
I don't think Mii costumes deconfirm all of Capcom; just the characters themselves at best and the series at worst. With that said, in combination with spirit events and certain games releasing after November 2019, I think the characters/series deconfirmed are:
Monster Hunter
Ghost n' Goblins (unless you think Fire Brand still has a shot at entering the roster before Arthur)
Jill, Chris, Leon, and Wesker, in addition to RE Village characters like Ethan Winters
On the other hand, I think these chars still have a decent shot:
Dante
Strider Hiryu
Frank West
Mega Man Zero
Nathan Spencer
Chun-Li
Morrigan Aensland
Mike Haggar
Phoenix Wright
Tron Bonne
Viewtiful Joe
Maybe Claire Redfield? She is one of the playable characters of the Resident Evil 2 remake, which was released on January 2019