if Kuma survives, then he's going back to RA. Dragon is probably coming to Egghead, he might take Kuma with him. Also I don't think Bonney will join, she has her own crew, so she will either be with Kuma in RA, or go and save her crew, which might mean she will sail with SH for a while.
Vivi is pretty much joining SHs, even if she didn't take Kuma's fruit, unless if WG captures her, Oda knows already that if Vivi meets Luffy, then she will be a Nakama.
I think Yamato also will join, Oda hinted at Yamato's joining so many times even after Wano arc ended, and his latest hint was in 1103 color spread, so it doesn't seem like Oda is giving up on Yamato.