Considering that Marco's bounty is 1.374.000.000, what bounties do you expect Jozu and Vista to have?
From 900m to 1.1b, with Vista over Jozu.
About Momo bounty, if he look soo much like Oden as Shinobu said, i wouldnt be surprised if the WG thinks he is Oden and just use the same bounty for him.
For the Shichibukai:
2b Mihawk
1.5b Buggy
1.488b Weevil
Hancock captured
Mihawk being the only non Emperor to get a 2b bounty, besides Ray, makes sense to me, and if my believe of Zoro going to 1.420b is right, Zoro would still be under Mihawk, with Zoro final bounty after he fight Mihawk and the SH get to Laftel going to something like 2.420b.
For Buggy, he will be the biggest captain after the three big guys of post-Wano (Luffy3b, Shanks4b and Teach5b) and a quasi-Emperor, with Law1.5b and Kid1.47b right behind him. Could even be that his bounty get even bigger and he become with Luffy the two new Emperors after BM and Kaido are defeated.
Weevil i really dont know, but for he to still be a threat, a bounty lower than 1b wont work, with 1.48b he at least go over Marco.
Luffy wont go to 5b now because his final bounty after Laftel will probably be 5.6b, that make the joke in japanese Go(5)-Mu(6), and is little bigger then Roger one. And when Luffy clash with Teach, he will have a lower bounty than BB, to be the underdog like always, and if BB got Pluton while Wano is happening, his bounty will go to something around WB bounty, around 5b, making for the enemy still feel like a threat to a 3b Luffy.