In honor of the all-union Super Bowl, I present the All-Blue-Collar League, a collection of U.S. professional sports franchises named after local unions, industry.

In solidarity:

NFL
Green Bay Packers
Pittsburgh Steelers
Dallas Cowboys
MLB
Houston Astros
Milwaukee Brewers
Seattle Mariners
Texas Rangers
NBA
Detroit Pistons
NHL
Edmonton Oilers

Thanks to @kostuch, @ikesmith, @joshandrews, @tcarmody, @lmsahistory, and @janieporche for suggestions.