Itachi would loose to all of them...
Just kidding.
No change against nagato at all but tie/sightly better then jiraiya alive, tie/sightly better then minato in edo.
Even if most of us hate ftg we got to respect its power. Minato was not only able to sense with his markings, but he also got a picture how the surroundings look like as he was able to tell there where 20 look alike units in the same area with only one marking. Able to choose where he teleports at the back or the front so Itachi is going to have a hard time as minato is able to sense where he is looking with his markings and simply stay out of sight and counter.
Teleport behind sussano mirror is also easy for minato so it is rather safe to assume that Minato has the right tools to beat Itachi while he was alive.
Edo Itachi is another story as he can spam his abilities and cover all his weak spots with black flames indefinitely.
Normal jiraiya has no chance but in sage mode he would put up a good fight.
So... What itachi are we talking about, alive or edo?
Come flamers, I am ready