Shuri is the smartest, remember, Shuri was dead in Avengers: Endgame,

Plus, Shuri was able to build hologram cars that could have the same effect as a real car, I am pretty shore Shuri would have managed to come up with Time travel

Peter Parker is just a kid from Queens with out the resourses of Shari or Stark

Doesn't really matter what yall think. Feige and the Russos say Shuri is..

Well there all smart in different ways but probably

Shuri Vis and Tony are the smartest

Honorable mentions would be like

Banner and Strange

Yeah nice they said it, but we go on FEATS here. And there is absolutely nothing showing me or @Marvelus that Shuri is smarter than Tony Stark. I’m sorry but they can say whatever they want, but until they’ve truly demonstrated that intellect, it’s nothing but words.