You will find many of the same species here as in Texas--sweetgum, willow oak, winged elm, hornbeam.
There is also American beech (which is a good species, but takes a lot of patience), blackhaw viburnum, blueberry, black cherry (another species that is good if you can find a decent trunk and can put up with its weird habits, including abandoning branching intermittently), Hickories of many varieties are common but not great bonsai subjects because of compound leaves. American elm is around, but they tend to be smaller trees. Oaks too, mainly white oak and red oak. Not as many oak species as in Texas, however, Willow oak is among the better subjects. They look a bit different here than in Texas. Leaves tend to be completely lance shaped. I noticed in Texas that the species has slightly lobed leaves...Dogwood, amalanchier (shad blow) offer white flowers and sometimes rugged trunks. Red maple is everywhere. Tupelo (pepperridge) is also, but difficult to collect.
Since you're in the Blue Ridge, you can find pine species too--Virginia pine is the most common and it's mostly iffy unless you can find a decent trunk with low branching. Loblolly isn't as common in the mountains as it is in the Piedmont. Table Mountain pine and pitch pine are around, but you have to look. Hemlock and even red spruce are also on the higher ridges and elevated back country in some areas.
The issue with collecting trees here is one of permission from landowners (not a huge issue for you since you have you own land). More alpine species like pitch pine and table mountain pine, however, tend to grow on protected land (federal and state).
FWIW, your cedar elms bald cypress and some other Texas natives, will probably do well here if given adequate winter protection--mulch in a garden bed, etc.