[Sculpt]

somebody offered up a good idea on the whole Jadis, helo-people "A"s and "B"s thing...

Noting the elaborate zombie biting devices Jadis used on Negan and Gabe, and the helo close by, maybe A is after bit, and B is before bit. Rick was a B.

So maybe they want recently bit people to research curing them.

It's odd, if they know Jadis is inflicting the bites, why wouldn't they prefer non-bit captured people where they would infect them themselves? Would fit better if they wanted accidental bites, but Negan/Gabe would have told them how it happened.