Just did a historical replay trying to simulate the real 19th Century (with caveats, mainly adhering to roster sizes/rotations as most were 2 Man but teams varied within years. Some teams even had 4 Man Rotations going in the late 1880s).
Despite doing this in the past, I've never had a 600+ game winner until
Charlie Buffinton! Also featured Matt Kilroy who won 570+ games himself(!!). As a fun aside, Cy Young himself ended up winning 337 games.