Ok so after reading through @mikeloc and @mattb’s discussion, PART of the solution was staring me in the face:
For any Job that had a single type (e.g. Seniority),
I just had to change the constraint from “Contains” to “Is in”.
But this doesn’t work for any Job Field that has a List of things. E.g. “Perks”, one Job could have a list of Perks, and you can’t ask the RG to be constrained to "only Jobs whose list of perks is in the list of perk’s dropdown.