Since some of my ancestors were Native American, I know some of the tribes that lived in the southeast of the US. Here are some:
1. Cherokee
2. Choctaw
3. Catawba
4. Creek
5. Oconee
6. Pee Dee
7. Seminole
8. Lumbee
9. Yamasee &
10. Chickasaw
I hope this works for ya!