XBBA accepts All Worldwide Existing Bully Breeds from All Bully Breed Registries:

Alapaha Blue Blood Bulldog
Alternative Bulldog
American Bulldog
American Bully
American Pit Bull Terrier
American Staffordshire Terrier
Arkansas Giant Bulldog
Aussie Bulldog
Bandog
Bantam Bulldog
Bull & Terrier
Bull Terrier
Canneo Bulldog
Classic Bulldog
Colorado Bulldog
Continental Bulldog
Dorset Old Tyme Bulldogge
English Bulldog
Exotic (Micro) Bully
French Bulldog
Heritage Bulldog
Hermes Bulldogge
Independent Bulldog
Leavitt Bulldogge
Liondog
Mini Bull Terrier
Mini Bulldogge
Mini Staffordshire Bull Terrier
New English Bulldog
Olde Bulldogge
Old English Bulldog
Olde English Bulldogge
Old Time Bulldog
Original Bulldog
Pacific Bulldog
Pocket Bulldog
Renascence Bulldogge
Shorty Bull
Staffordshire Bull Terrier
Valley Bulldog
Vintage Bulldog
Victorian Bulldogge
etc.