The San Francisco Giants won World Series titles in 2010, 2012 (blech), and 2014. They came oh-so-close with Barry Bonds and Dusty Baker and Jeff Kent before that, too, and won an absurd 107 games during the 2021 season.
The St. Louis Cardinals have - for most of us around here who choose not to look at their actual numbers anymore - won every damn thing ever in the National League Central for at least the past generation.
The Seattle Mariners made the playoffs last year after a 90 win season, and did so having acquired seemingly every single player from these parts with a pulse in that time.