Orochimaru with Yamanaka or Nara clan jutsu.

[Nattana]

Just imagine Orochimaru having either Mind Body Transfer or Shadow Imitation.

Use Shintenshin no Jutsu // Kagemane no Jutsu.

Twist your or your target's neck.

Profit.​

 

[Pumpkin Ninja]

He still wouldn't be top 5.

 

[Umari Senju]

Yeah why not? He was a member of the leaf and he experimented on a ton of kids. The Time skip means his current body should be just about used up so time for another body swap. His next body could be a Nara or Yamanaka

 

[Naruto D Luffy]

He wont be the top 9