I'd take Pippen over about 4 guys on that list. Don't feel like getting into arguing his credentials vs those guys though. You say he went into the shitter after MJ retired, he was like 34 years old with a bad back then and led Portland to 1 4th quarter collapse away from being favored to win the NBA title vs the Kobe/Shaq Lakers which were obviously not chopped liver.
In '93-94 he led the Bulls to 55 wins after MJ retired. Pippen was probably the best perimeter defender of all time, excellent passer, rebounder. He led the Bulls in every single category the year MJ retired.
Ask Magic Johnson how good he is, he shut him down in the 91 finals. He didn't win 6 rings by accident.