If I just had to pick one of each:
Underwhelming: Obvious answer would be Big Mom, but since that's already said I'll say the Big Mom Pirates. Oda either just didn't care about continuity in the slightest, or he literally forgot they existed.
Overwhelming: Marco holding off King and Queen was surprising
It probably goes without saying these days that almost everything about Wano was garbage though, it would be a perfect example to students of how not to write a story. (I'm still salty, Oda is a hack.)
Underwhelming: Obvious answer would be Big Mom, but since that's already said I'll say the Big Mom Pirates. Oda either just didn't care about continuity in the slightest, or he literally forgot they existed.
Overwhelming: Marco holding off King and Queen was surprising
It probably goes without saying these days that almost everything about Wano was garbage though, it would be a perfect example to students of how not to write a story. (I'm still salty, Oda is a hack.)