I'm going to call you on your bullshit.
You can't put in people that aren't even in the manga. You just put random ass people down to make it seem like more.
It is a good thing your entire post was a waste of space then. I don't know why I was expecting anything else really, all that you ever do is try and flame or troll people.
Shisui is nowhere near Itachi's skill level, that is BS. Ao fought him and survived, and guess what Ao sucks balls. Maybe once a decade he can beat him, but other than that Itachi beats him easily. Don't even try and argue this one because anything you say here will be bullshit you made up.
Gin and Kin bros lose too, they aren't real jinchurikki and have no defense against Itachi's genjutsu, and if they turn into a mini tailed beast they are too large of a target for the Totsuka blade or Amaterasu.
Anything related to the SO6P doesn't count. He isn't even a gatdam character.
Naruto might be able to beat him but he still doesn't have a defense against genjutsu yet.
Killer Bee can't beat him either. Itachi is faster than Bee normally, and even Sasuke was able to dodge Bee's tailed beast cloak attacks. Itachi is faster and better with taijutsu, so that wouldn't be a problem. And if Bee were to fully transform he would get sealed by the Totsuka sword if it were a serious fight.
Hashirama we know literally nothing about. But you know what I do know? A weak ass old Hiruzen was able to put exploding tags on him and his brother. Had those been their real bodies they would have lost a limb each.
You know what else I know about Hashirama? He had to have help from the 9-tails to beat Madara and guess what? Madara didn't die there. He was still alive and then got the rinnegan and Hashirama's powers.
Find me somewhere where it says Sasori is immune to genjutsu. That is fanmade BS. If he has chakra then he has a chakra network, which is how genjutsu works. Anything with its own chakra pathway can be caught in genjutsu. And even if that were true Itachi can beat people that Sasori can't so it doesn't really make much of a difference since Sasori is not more powerful than Itachi.
So really your only argument is characters that aren't even in the manga and have never been shown doing anything, in addition to mostly characters that are all hype and have no screen time.
The bolded people are the ones that can beat Itachi, green names are the ones that you are 100% wrong about, blue names don't matter at all because you were obviously just putting them in to find more people to make it seem like you had a better argument, and the red named people are almost all hype or we just know too little about. Honestly how are you going to say Hiruzen or Hashirama can for certain beat Itachi when we haven't seen either of them fight.
Itachi has a ton of haters because he is a well liked character, and is powerful. Had he not been so awesome you probably would have liked him yourself, but instead you joined the "I hate Itachi bandwagon" which is exactly like what a hipster does. Oh no everybody likes that character, maybe we should all start to hate him since liking him is too popular and I want to be an individual.