Mine is Amorpha laevigata with only two observations. Only one of those is RG. Mine is casual because we planted them in our yard.
If you want to add observations for this species, look for it in the light green or yellow counties in this map:
Edit: there could be more on iNat that have been misIDed. I think this one might be A. laevigata: https://www.inaturalist.org/observations/7313342