Arizona cardinals.
packers and the steelers twice
Bengals (twice), Dolphins, and Broncos.
Super Bowl IIThe Geen Bay Packers beat the Oakland Raiders in Super Bowl II played on January 14, 1967.
Super Bowl IThe Green Bay Packers beat the Kansas City Chiefs35-10 in Super Bowl I played on January 15 1967.
Super Bowl XVIThe SF 49ers beat the Cincinnati Bengals 26-21 in Super Bowl XVI played on January 24, 1982.
Super Bowl XXXIIThe Denver Broncos beat the Green Bay Packers 31-24 in Super Bowl XXXII played on January 25, 1998.
Super Bowl XIVThe Pittsburgh Steelers beat the Los Angeles Rams 31-19 in Super Bowl XIV played on January 20, 1980.
Cincinnati Bengals in Super Bowls XVI and XXIII, Miami Dolphins in Super Bowl XIX, and Denver Broncos in Super Bowl XXIV.
The Cowboys and the 49ers can never play in the Super Bowl because they are both in the National Football Conference. The Super Bowl is between NFC teams and American Football Conference teams.
Bengals (twice), Dolphins, Broncos, and Chargers.
Super Bowl XLIIIThe Pittsburgh Steelers beat the Arizona Cardinal 27-23 in Super Bowl XLIII played on February 1, 2009.