I took a look at what is considered the gold standard of NFL franchises for the 80's and 90's, the San Francisco Forty-Niners. Only 5 members of those great teams that were with the Niners for the majority of their NFL careers are in the HOF: Walsh, Montana, Steve Young, Jerry Rice and Ronnie Lott.
In addition, Fred Dean played for them for 5 yrs in the early 80's, so if we're going to claim James Lofton, Dean should count.
They also had 3 HOF'ers who only played for their 1994 Championship team: Deion Sanders and DE Richard Dent played for them for only that 1994 season while Rickey Jackson was there for the '94 & '95 seasons.
The Bills' list from their 4 Super Bowl teams may be more impressive considering they didn't maintain that success as long as the Niners, who made the playoffs 18 straight seasons.