The Pitchers screen (League Menu >> History section >> Hall of Fame >> Pitchers tab) lists pitchers in the currently selected league's Hall of Fame:

About Hall of Fame Elections

By default, players are elected to the Hall of Fame automatically by OOTP. The decision about who gets elected is decided primarily based on numbers established during the creation of game in the Hall of Fame Requirements section of the Options page. These can be changed after game creation by navigating to Game Menu >> Advanced section >> Setup and Options >> League Setup tab >> Options tab >> Hall of Fame Requirements section. Automatic induction can also be disabled from that screen.

Commissioners can also manually induct players into the Hall of Fame.