The list is 95% accurate imo, just a few things I would personally change.
-Alive Minato is in "High kage", yet MS Obito is in "Legend in the making"? Last time I checked Minato beat MS Obito. Unless you're saying it's great war Obito, not masked man. Even though there is little evidence that Obito had improved since masked man.
Why is KCM Minato in "Legend in the making" yet regular Minato is high kage. I think you would agree with me that Minato's fighting style is FTG based. FTG is faster than running in KCM mode. I mean the only thing Minato has done useful with kyubi chakra is teleporting others away. Not to mention it was because Naruto already gave chakra to the alliance that he teleported all of them out of the barrier. KCM does grant more chakra, but Minato's fighting style does not lead to an endurance fight, he uses FTG + rasengan after all. Also did Minato use BM? Positive he only used KCM.
If you're basing 3rd hokage prime off of hype, he should be at the lowest legend in the making. Since he was claimed to be the strongest of all hokages and the professor who mastered all konoha jutsu. Then again, Iruka said it after all, how credible is he xD.
How is Gai only mid jonin, yet you put part 1 kakashi above him? Honestly Kakashi in part 1 was made weak to a degree (while we're on this part, why is part 1 kabuto a tier lower than part 1 kakashi? Kabuto outsmarted kakashi, made kakashi think he was outclassed, and jiraiya believed he was on equal level as part 1 kakashi. Imo Kakashi wins but tht doesn't mean it wouldn't be a close fight). In part 1 i'd say gai >= kakashi any day because of 8 gates. I say part 2 Kakahi > gai because Kamui was a lethal move in his arsenal + his stamina increased greatly since part 1.
How is SRA Gaara above Might gai? Why man whyyyyyyy. Did you see how Gai man handled 1,000 of kisame's sharks with morning peacock? I'd say 1,000 sharks can do more damage then sand tsunami. I mean gaara fought kimimaro yet would have lost w/o the illness, and imo Gai >= Kimimaro taijutsu wise (I pick kimimaro > gai in a fight due to his bones). Even Lee was able to land a hit on him after all. Yet you're saying gai sensei < 12 year old gaara?
You put Tsunade in mid kage tier. Your list claims: Tsunade > Hidan, Konan, Hanzo, 4th kazekage, and Yugito nii. I think Tsunade is strong, but imo she can't beat these 5 in a 1v1. would drop Tsunade to low kage tier. Side note: Thanks for not overhyping Konan bc of 1 billion bombs. She stated she had them PREPARED, something many don't understand.
You left Kidomaru out of this list (the spider guy from the sound 4).