The following matchups are so obvious:
Usopp and Nami vs Page One and Ulti
Carrot and Wanda vs Perospero
Robin, Franky, and Brook vs Black Maria, Sasaki, and Who’s Who
Maybe Oda could have Yamato, a future SH, actually beat Sasaki and make Franky take out the remaining Numbers instead, but I think that Sasaki is too much below Yamato’s pay grade. If Franky fights Sasaki, then I guess Chopper will probably beat the remaining Numbers. Jinbe vs Jack is 99% likely. Oda could go either way with Sanji/Zoro vs King/Queen at this point since due to Zoro fighting Kaido later, him taking the weaker Calamity would make sense