Where is current Garra?
Why is Hanzo and Itachi so why?
Not every character has to be included, I just showed examples. Gaara would probably be on the upper end of the middle tier. The guys strong.
Itachi is high because he is a poorly written character, portrayed by Kishimoto to be basically manga jesus. Tsukiyomi, Izanami, Susanoo, Yata, Totsuka- he's OP as f*ck, like it or not.
Very few people could survive Hanzo, the only ways to beat him is if you have a tolerance to his poison or you have very specific alternative techniques (basically just being an edo, sound jutsu & kamui) you become paralysed and die. It's controversial to say even Minato or Madara could survive the poison. Hanzo was also stupidly capable and the strongest ninja of his time. The 2nd ninja war was literally owned by him and I have written an entire thread before to prove how he deserves the title of top tier when you consider how he's basically just as unbeatable as people like Madara and Hashirama. Is he stronger than Hashirama & Madara? Probably not, but he deserves the title nonetheless.