The All-Blue-Collar League

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.