PK- Luffy/kidd/teach/kaido/BM/Doffy off the top of my head.
Yonko is a stepping stone for PK.
Funny you somehow obliterated from your mind that more than luffy wants to become PK, wait a minute i forgot to add every single pirate that set off in the search of the one piece lmao. Stay mad bro.
Flashback kuina and Zoro wanted WSS, no one cares, ouch.
Heck more people wanna be warlords
WSM is sub title, just like WSC, it comes with other things, in this case Emperors, but wait. To want to control vast territory and rule over it is what it means to become an emperor right? Therefore Teach wanted to become emperor by taking out WB, WB became an emperor to protect his family and the people in need, kaido wanted to become an emperor to have a homebase and ressources to wage war, BM wanted to become an emperor to create a place where everyone can live together without discrimination.
Ooops
I just destroyed your entire post.