During the Yankees' 4 World Series championships from 1996 to 2000, the player with the greatest WAR on the team was not a member of the Core Four, but actually Bernie Williams.
Sanchez, Bird providing Yankees playoff hope
New York Yankees - Wikipedia
JAWS and the 2023 Hall of Fame Ballot: Andy Pettitte
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List of Yankee Retired Numbers in Monument Park - Newsday
Here are the Yankees' 21 retired numbers Who belongs and who doesn't? Andy Pettitte, Jorge Posada, Bernie Williams, more
Derek Jeter heading to Hall of Fame, although not unanimously