How about no?
I've already said this before but I honestly don't see Yamato dying in this arc.
The tragedy that you speak of that must happen in the Wano Raid has already happened. First it was Yasuie, then it was Kinemon. Just how many more characters need to die for Luffy to get serious?? In the long run this also becomes a bad and cheap writing tactic if Oda has to kill a bunch of people just make Luffy win a fight.
As for your scenarios:
1. Kaido killing Yamato. No i don't see this happening. For all the lack of care that Kaido has towards Yamato, he still cares about her-even if its materialistically. Kaido still wants and needs Yamato to become Shogun of Wano. Cause hypothetically in his mind- once he deals with Luffy and the alliance, he's gonna go on expeditions and take over the world with Big Mom. Yamato is still needed to stay in Wano and watch over Onigashima. That's why Kaido wants Yamato to be Shogun. And Kaido has done this before, this isn't a new thing. When Ace first arrived on Wano, Kaido and his crew were out on a expedition, leaving Yamato alone to defend Wano and face Ace. Yamato is also a Oden fanboy which makes her the only Beast Pirate capable of being accepting and reconciled by the people of Wano. The bad blood and hatred between Kaido and the retainers and other Oden loyalists will never wash away. Yamato is actually Kaido's only hope of resolving the Wano conflict peacefully. And kaido knows this, its why kaido puts up with so much of Yamato's shit and her rebellions.
As for kaido killing Yamato accidently- there is a very low chance for this to happen. Kaido doesn't have lethal attacks. He needs to bash his way in to kill someone. Despite kaido beating a lot of people this arc, the only person he's killed was Kinemon- and he actually had to resort to stabbing him in the back with a Katana. Yamato will never die to Kaido by accident, she's too strong for that. Ulti didn't die even after getting impaled in the stomach by Big Mom, so how would Yamato die to one of kaido's attacks if she's Kaido's child and has his same durability (tanking cannonballs like nothing), and also possesses a zoan devil fruit (quite possibly ancient or mythical zoan) which greatly increases her durability and recovery rate even further?
The cover page foreshadowing don't mean much either since its sole purpose is to highlight the history that Yamato had with Ace. It isn't a real foreshadow that Yamato will succumb to the same fate since Oda has done this to other Straw Hats in the past. Oda also did this to Jinbe for the cover page of Volume 66 but Jinbe never died did he?
2. Yamato dies saving Momonosuke. I don't see this happening either. Yamato has been impatient with Momonosuke since the beginning and even said that she wants to fight. She didn't even stay to babysit Momonosuke, she's not gonna come to sacrifice herself for momonosuke. Kinemon already did that anyway. Yamato's lack of personal connection also makes Yamato's sacrifice for Momo really lackluster. Kinemon's death was so impactful and touching because he was the protector, carer and also father figure for Momo. He was the one who planned the raid and has been with Momo through thick and thin. Who's going to Yamato's funeral if she were to die? This was a big factor in Ace's execution that Yamato actually lacks.
As for your candidates of who would kill Yamato, none of them are appropriate imo:
CP0- we don't even know who they are- Yamato isn't gonna die to some no-names.
Kaido- i already explained why kaido won't kill Yamato
Akainu-we don't even know if he's coming to Wano. And even if he personally did to finish off Kaido and the Beast Pirates (i still have doubts that Kaido is even going to die this arc), its more likely that Yamato will escape and leave with Luffy and the rest of the crew. The fact that Yamato has been locked away on Wano means that Akainu probably doesn't even care or know about Kaido's daughter. Kaido and Big Mom will be the bigger targets for Akainu to eliminate. The reason why Ace was viewed as such a threat for Akainu and Sengoku was because of Ace's reputation as a successful pirate. Ace's fame, being Roger's son and also under the protection of Whitebeard, in Sengoku and Akainu's minds was the perfect storm to create another New Pirate Era- something that Whitebeard already foiled and created himself before his death anyway. None of these potential threats even apply for Yamato. Hell, even after Yamato joins the Straw Hats, Luffy and Robin will still be viewed as the bigger threats compared to Yamato. Robin being able to read the Ponyglyphs and learning the Void Century that the World Government erased, covered up and never want to be revealed. And also Luffy. Who by the end of Wano will be a new Yonko Level Threat, gained more Road Ponegplyphs and also potentially obtaining the Voice of All Things Ability like Roger. You honestly think that Yamato will ever be more dangerous than those 2 and that Akainu will go after Yamato first and not Luffy and Robin??