The sequence of how they let people and groups in made a little bit of sense the first couple of years, but went downhill from there.
How did Bill Graham get in BEFORE either the Grateful Dead or Jefferson Airplane.
How the Four Seasons get in BEFORE Led Zeppelin?
Bill Graham and Jann Wenner ran the music business in SF so therefore they get in before Grateful Dead or Jefferson Airplane. Why are Jefferson Airplane in when their two most famous songs are Great Society songs?
Four Seasons and Led Zeppelin both belong, order of selection doesn’t matter.