Another addition might be Blackburne, who learned chess at age 18, which is pretty much unheard of at top levels. Despite his late start, he managed to rise to the highest levels of chess at that time. Less than two years after learning the moves, he defeated Steinitz in a tournament game.
So we can add also Rubinstein and Tartakower. They learn to play relatively late (16 and 20 years old), but they still were in the elite of their time.
Tal.