Well aren't you just on your game today.
I think back to the study of group dynamics, where there are task-oriented people, who focus on getting things done, and group-oriented people, who focus on making sure the group functions together harmoniously. I see Brad as belonging to the former, the kind of guy who will set a goal and knock down or go around whatever walls he runs into to get it. Robbie and Jeanine are more group-oriented people, focusing on keeping everyone on board. To analogize to the Bridgemont series, Brad's like Granger, directing where the ship goes, while Robbie's like Roberts, making sure everyone is happily rowing in that direction.
If a Tonto personality evolves in this group, I don't see it coming from JP, I see it coming from his partner.