1 out of 3 is a real candidate, the other 2, no way. Make sure you remove Young's ~105 wins from when he threw from 50', and discount (heavily) two of his best seasons when the AL was inferior to the NL.
Ryan is pathetic as the #1.
No doubt that that Alexander is top drawer historically.
There may have been different rules back then, but it was still baseball.
What if a player from back then just decided than none of these performances should count because its from ~60ft out?
He is the career leader in br WAR for pitchers. By alot.
Personally I put alot of stock in peak value rather than longevity, but a case can certainly be made for Young.