We'll probably find out if Bonney joins (although I doubt it) in the next chapter or two providing the focus is on the Straw Hats most of the time, which hasn't been the case recently.
Same with the Bonney is Luffy's mother theory, which would probably be debunked if she acts neutral towards Luffy.
Also, there's a small chance that Carrot is still a possibility if the time in which they left Wano and now aren't too far apart. Don't get excited about anything, though. Her chances of joining get slimmer and slimmer with each chapter until there's no chance whatsoever.
