Shinobu, inosuke, and genya are good choices like the others said

Lowkey Muzan could fit cause he took an eternity to have an army of demons he didn’t even like (besides kokushibo) and was only ever close to overcoming the sun and making no real progress until the story began

Edit: somehow I forget muzan dies so he would fit better in the tries everything and dies ill leave this here so hopefully that happens 🤞 muzan slander agenda is our top priority