I agree that itachi's sword would pose a huge threat because once hit your K.O xd
However how long can itachi keep his susanoo up for? Maybe a few minutes at best; madara can keep his going all day long. I dont know if the sword can pierce through susanoo but assuming it can't (both techniques cancel each other) itachi wont win.
For nagato's soul steal to work he must be up real close, if minato can transport inside susanoo then they probably might win
Oh and genjutsu is a weakness of the rinnegan so nagato would have a hard time facing hashi with his darkness technique