Dave, that one looks like a Hackberry Emperor to me also! Nice one! Am loving all those pretty butterfly pics! I've now got a pair of Queens hanging together in the yard, so am hoping for eggs on the milkweed! The one with the ragged edge on one wing is female and the other is male.
I think this one is a Pipevine Swallowtail, although the color seems a bit off.
Maybe a Spicebush Swallowtail:
