Lee Roy Selmon incredibly is only 75th.
The list is bogus then.
The list IS bogus as a ranking of "all time" players because it's based on fans ratings. Fans are diverse in age and younger ones have only statistical information to develop their opinions about the great players of past generations. This would skew the rankings to favor the younger, or more recent players.
For the Bucs, there's no doubt the list goes; Selmon, Brooks, Sapp...