Good list, I'd swap Tobirama and Hiruzen perhaps if youre ranking prime hiruzen
and in the novels, even after losing his sharingan, its stated kakashis combat ability has significantly increased since he fought obito and madara.
And yeah people SLEEEEEP on how fucking strong war arc kakashi is, he's probably stronger than every hokage except Naruto, Hashirama, and Bijuu Minato.