The American Nurses' Association (ANA) has advocated that all advanced practice nurses have one title, APRN. The various titles have been confusing for not only lay people, but also health professionals. Educational programs and requirements for advanced practice obviously are quite different, depending on what degree and certification one is aiming for.
Stewart, Julie. "APRN: What Does it Stand For?" Connecticut Nursing News 76.1 (2003): 14.