In my opinion, these are the top six strongest in MHA ( Their quirks )

Dabi: Hellfire
Kai: He can blow you up and I think heal
Tokoyami: Dark Shadow
Midoriya: One For All
Bakugo: Explosions
Amajiki: Manifest

Dabis quirk is actually cremation, endeavors work is hellfire.
Kai’s quirk is like Eri’s, he can break stuff apart and put them back together

All right! Thanks for that!

I auto win

TAMAKI!!

you will die shinsou

You dare challenge me. Oh wait. I don't have a quirk. I'm a god

i will destroy you

Try me