Would you call a travel?

[Hawks Coach]

It is important to differentiate 1) what you are calling a jump stop, taken when one foot is on floor at time of pickup and there is a two foot landing, from 2) a two-foot stop taken when the player left floor before picking up the ball. Both cases involve an apparent jumping action. But in the latter case (which I also consider to be a jump stop), the pivot foot is available per 4.43.2a(1). The key is where the feet were when the ball was picked up, not how they landed.

pick-up ball, jump, stop = no pivot
jump, pick-up ball, stop = pivot

Another thing to ask yourself is would you have allowed a 1-2 stop (where one foot lands before the other). If you would, then pivot is available regardless of whether there was a two foot or 1-2 landing. The only provisions for a 1-2 landing are 4.43.2a, which also allows pivot on jump stop. 4.43.2b does not allow pivot nor does it allow a 1-2 stop.