(1) Under a policy or contract issued to any common carrier or to any operator, owner or lessee of a means of transportation, who or which shall be deemed the policyholder, covering a group of persons who may become passengers defined by reference to their travel status on such common carrier or such means of transportation;

(2) Under a policy or contract issued to an employer, who shall be deemed the policyholder, covering any group of employees, dependents or guests, defined by reference to specified hazards incident to an activity or activities or operations of the policyholder;

(3) Under a policy or contract issued to a college, school or other institution of learning, a school district or districts or school jurisdictional unit, or to the head, principal or governing board of any such educational unit, who or which shall be deemed the policyholder, covering students, teachers or employees;

(4) Under a policy or contract issued to any religious, charitable, recreational, educational or civic organization, or branch thereof, which shall be deemed the policyholder, covering any group of members or participants defined by reference to specified hazards incident to any activity or activities or operations sponsored or supervised by such policyholder;

(5) Under a policy or contract issued to a sports team, camp or sponsor thereof, which shall be deemed the policyholder, covering members, campers, employees, officials or supervisors;

(6) Under a policy or contract issued to any volunteer fire department, first aid, civil defense or other such volunteer organization, which shall be deemed the policyholder, covering any group of members or participants defined by reference to specified hazards incident to an activity or activities or operations sponsored or supervised by such policyholder;

(7) Under a policy or contract issued to a newspaper or other publisher, which shall be deemed the policyholder, covering its carriers;

(8) Under a policy or contract issued to an association, including a labor union, which has a constitution and bylaws, statement of organization or substantially similar document and which has been organized and is maintained in good faith for purposes other than that of obtaining insurance, which shall be deemed the policyholder, covering any group of members or participants defined by reference to specified hazards incident to an activity or activities or operations sponsored or supervised by such policyholder;

(9) Under a policy or contract issued to cover any other risk or class of risks which, in the discretion of the Commissioner, may be properly eligible for blanket health insurance. The discretion of the Commissioner may be exercised on an individual risk basis or class of risks, or both.