I'm probably not far enough south and I'm just starting to incorporate apples into our program in central VA. The named crabapples I'm starting with are Virginia (Hewes) Crab and Dolgo. If you like the characteristics of the wild crabs on your place, you can clone them. Some wild crabs can be fairly true to seed, but if you want an exact copy, simply wait until those seedlings are large enough and graft them with scions from the parent tree. You will get a genetically identical tree.
Thanks,
Jack