@viztur Luffy can still use Advanced Haki forms. ACoC ACoA ACoO.
Naruto can use Chakra including Sage mode and Rasenshuriken.
Gojo can still use Cursed energy, RCT and six eyes.
Goku can still use Ki including Kamehameha.
I'm not picking anyone though.
@kyoshik2kira@NarutoDaily_ He only created Rasenshuriken and mastered sage mode in that time.
After that he mastered KCM with bee and unlocked KCM 2 after that.