Currently, Pujols ranks first in Intentional Base on Balls (236), Base-Out Runs Added (624.29), WinProbabilityAdded (58.7), Situation Wins Added (62.0) and Base-Out Wins Added (58.7).
The creator of this question added the clear cut nominees at this position: Peyton, Brady, and Rodgers, but left out one important one: Matt Ryan, the leader in winprobabilityadded of any player this season.