Elbie Nickel played his college football at the University of Cincinnati after serving his country in World War II. Nickel was a late-round pick (17thRound in 1947), but he parlayed that opportunity into an 11-year pro football career, all with the Pittsburgh Steelers.
Kevin Greene played far more games with the Los Angeles Rams and one less as a Carolina Panther, but it was the three seasons in Pittsburgh (1993-95) that arguably got him into Canton.
If you look at overall popularity in the canon of the Pittsburgh Steelers, Rocky Bleier is one of the names that consistently come up.
Frank Varrichione had a great career at Notre Dame, where he helped them win a version of the National Championship in 1953. Two years later, the Tackle was a First Round Pick (Sixth Overall) by the Pittsburgh Steelers.