Action/Fantasy/Adventure Manga Recommendations?

Any recommendations for manga that have interesting mystery and world building like Hunter x Hunter, One Piece, Attack on Titan, Nippon Sangoku, Jujitsu Kaisen, or even something like Monster?
I like protagonist similar to Gon, Kurapika, Luffy, and Yuuji! I also like when the characters in the story are dimensional, and have blatant flaws, like Eren or Kenma!
I’m currently reading Full Metal Alchemist, Gokurakugai, Kagurabachi, and Centuria, so anything similar to those stories too~
Any recommendations of stories that pull you in with the lore of their fictional world will be appreciated, thanks!!