A petition for appointment of a successor conservator may be filed by any of the following:
(a) The conservatee.
(b) The spouse or domestic partner of the conservatee.
(c) A relative of the conservatee.
(d) Any interested state or local entity or agency of this state or any interested public officer or employee of this state or of a local public entity of this state.
(e) Any other interested person or friend of the conservatee.