Unless otherwise specified in this chapter, any adult person or persons may petition the Family Court for a guardianship order regarding a child not his, hers or theirs. Unless otherwise specified in this chapter, DSCYF, the Division, a licensed agency, the guardian ad litem or a hospital that has an interest in the health, education or welfare of a child or children may petition the Family Court for a guardianship order so long as the proposed guardian or guardians consent to the appointment.