This also varies from state to state but generally:
Person - makes decisions about person, programs, medical care, residence, release of confidential information.
Property - manages and makes decisions about financial matters, benefits, real estate and other property often referred to as conservator.
Plenary - means total and can be attached to guardianship of person or property or both. In most states there are exclusions to plenary guardianship, which may be residential placement, certain medical procedures, and sale or transfer of property. The guidelines again are in the state laws regulating guardianship.
Limited - means that the guardian has only the authority specifically given by court order. The ward keeps all other decision-making rights not specifically outlines by the court order. In most states the appointment of a limited guardian does not equal a finding of legal incompetence.
Successor - the court appoints another guardian when the original guardian dies, resigns, or is removed. Usually the successor has the same powers of the original guardian.