If you're great out of the chute and your prime years are your first ten years instead of reaching your prime a few years in and extending it in later years, commenters, writers, and such seem to be less impressed.
Orlando Cepeda (properly not on this list) is another example. His first seven or eight years were his best.
The shorter your prime, the better it must be.
IMO, good enough to make the list, but not at 16.
Mike Trout's career WAR: 48.5
Harper gets a lot of credit for how good he is for his age, but he's not on Trout's level.
Honus said, "It's an honor to be mentioned with John Henry Lloyd/"
Around 1935, Babe Ruth was asked who the best player he ever saw was. "The best player in the Majors, huh?" The writer said, "Not just the Majors, but anywhere.
The Babe said, "Oh. In that case I'd have to say Pop Lloyd."
His numbers cannot be documented, but maybe Lloyd should be listed here.