The more I think of it, the more I think this is a good question to ponder.
How exactly do you rate these 'umbrella' teams; in essence a conglomeration of teams all under one umbrella.
The individual teams clearly fall under the standard definition of the word 'team' as they all must work together to have a successful day. We've all seen those races where the gascan man didn't get a full fill and its impact on the driver. However, what the front right tire changer does on Jimmie Johnson's car has no impact on Dale Earnhardt.
In terms of ranking, it's hard to call these umbrella teams as 'teams'. Even in a sport like basketball, which has a very high correlation to individual impact on team success, you could never have a championship situation like we currently see with Hendrick. Michael Jordan, as good as he was, couldn't win titles without the likes of a Pippen, or guys like Grant/Rodman crashing the boards, or 3 point specialists opening up the offense. As great as Wilt was, he still got pounded by the Celtics in the playoffs, only to win championships in his later years when he became surrounded by better players. Even in a sport that has an affinity for individual players, a single player still needs to be surrounded by others capable of pulling their weight.
But in Motorsports, you can have a situation where one team is completely dominant, while the other teams under the owner umbrella have done almost nothing. Earnhardt hasn't won in so long that we're putting asterisks on his races if he just gets close. Mark Martin has retired more times than Brett Favre. And Jeff Gordon has largely become forgotten, despite a great career.
It's a great question, because how do you rank Hendrick is going to be somewhat a question of how much credit do you give the overall based almost solely on the recent success of Jimmie Johnson.