Controversial Is there any Shounen with a better World Building than One Piece?

#81
By Tier :

A+ Tier :

+ One Piece : Extremely Rich; Diverse; with a global organization; some coherence problems
+ Naruto : Really Rich : Characters, Jutsus, Organizations, Countries; System that mostly makes sense; Minor coherence problems

A Tier :

+ Full Métal Alchemist : Based on 1930 Germany real world; Strong coherence; Rich in Characters and Lore
+ My Hero Academia : As much as I am not that big of a fan of the manga; the world building is really refined; Characters and Powers are diverse
+ One Punch Man : Based on real world; kind of messy and not coherent global organization; diversity of characters, lore

A- Tier :

+ Solo Levelling : Strong coherence of the Lore; based on real world; a little poor and limited

B+ Tier :

+ Soul Eater : Rich and diverse; make a little sense
+ Bleach : Not that diverse; strong strong characters though, some coherences issues
+ Gantz : Like Bleach; normal world protagonist evolve in supernatural world

B Tier :

+ Dr Stone : Basically the world expand when a new arc start
+ Jujutsu Kaisen : Kind of like Bleach, Gantz and One Punch Man but less rich

B- Tier :

+ Sakamoto Days : The world building doesn't make a lot of sense; based on real world
+ Fairy Tail : Every local problem is world threatening tier; even though the protagonists seems not that significant in the verse

C+ Tier :

+ Dragon Ball : Kind of Rich World even though the thing is absolutely not coherent and only serve comic relief

C Tier :

+ Attack of Titan : Really Limited World; really limited designs; weird scenario
 
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