In the final saga, there will be seven main groups: the four Yonko crews, the Revolutionaries, and two Navy factions.

Predictions:

• Blackbeard’s crew is likely to defeat Shanks’ crew, possibly with the help of the Seraphims. I think Blackbeard might form an alliance with the Celestial Dragons for the ultimate battle.
• The Navy will divide into two groups: Akainu’s faction and a group called Sword. I believe Akainu’s faction will team up with the Celestial Dragons.

The Final War:

• Sword will go head-to-head with Blackbeard’s crew, with Coby likely defeating Teach.
• The Straw Hat crew, along with the Revolutionaries and their allies, will confront Imu’s faction and Akainu’s faction.

At Raftel:

• The Straw Hats will face the Cross Guild, leading to the long-anticipated duel between Zoro and Mihawk, which I believe will be the series’ final battle.