If one doesn't count the 1994 season (which didn't have playoffs or a World Series), the longest streak in MLB history is 14 seasons by the Atlanta Braves (1991-1993, 1995-2005). If one does count the 1994 season, the longest streak is 13 seasons by the New York Yankees (1995-2007).
dallas cowboys
The coloumbus blue jackets never been to the playoffs but one
The longest current playoff streak in professional sports belongs to the NBA's San Antonio Spurs, who made the playoffs for 22 consecutive seasons from 1998 to 2019.
The best team in the world had 19 wins spanning four consecutive Stanley Cup titles and five playoff seasons. This is a record for all North American professional sports franchises.
They have five Super Bowl wins, eight Superbowl Appearances, and are the biggest franchise in the NFL, maybe in most sports. That's why they're significant.
As of the 2007 NFL Season the Dallas Cowboys are the world's richest sports franchise with $1.5 Billion.
The NCAA basketball tournament
easy buy one
Man U
Yes, they are.
cleveland indians
The Detroit red wings with 19 going for 20 this year