Why cant Jiraiya do the same? He almost defeated Pain. Also, Danzo was strong but that doesnt mean he is in the top 10, in fact he physical power was weak and he rely on Ninjutsu for everything.Mangekyo sharingan users can utilize Susano'o, this is a power that Sasuke made 2 kages with their bodyguard retreat for their lives when they had no extensive knowledge on its power. And this happened with a nursling mangekyo sharingan user, being capable of killing a kage candidate(Danzo) and nearly killing an actual kage (Unruly Ay lost an arm in the process).
Jiraiya is not capable of replicating this feat, Orochimaru a senjutsu user admitted to being weaker than a MS user Itachi, and Dsm Kabuto lost to a MS user (due to a situational type jutsu).
Senju Sage Mode is the Sage Mode Hashirama uses. Hashirama doesn't have Frog Sage Mode or Dragon Sage Mode so it's the only name I got for such a Sage mode otherwise you know something that I don't?
The only people that successfully surpassed a mangekyo sharingan(no buffs) user is Bsm Naruto and Sm Hashirama.
As for the Rinnegan, it is a power that already utilizes six path chakra already, so there's no addition buff to to it but you're gonna need a Six path power senjutsu to beat/stalemate a Six path power eye known as the rinnegan.
And no kages retreat from Sasuke. And he was no near to kill Ay 4th Raikage. In fact he was destroying Taka Team. Orochimaru can mold a little senjutsu but not enter to sage mode. And by feats Kabuto was playing with Itachi and Sasuke, it took Itachi use a jutsu to defeat Kabuto. But Sage Mode made very strong Kabuto having more powerful stats, it was just Itachi's intelligence and jutsu that one the battle.