(1) all Elected Officials;

(2) the positions expressly identified as “Unclassified” in Charter Section 500;

(3) all members of boards and commissions;

(4) positions in any class or grade created for a special or, temporary purpose and which may exist for a period of not more than ninety (90) days in any one calendar year;

(5) persons employed to render professional, scientific, technical or expert service of any occasional and exceptional character;

(6) part-time employees paid on an hourly or per diem basis;

(7) persons employed to fill positions which have been created for work and/or projects funded entirely or in part by grants made to the City; and

(8) any additional management level positions in the Unclassified Service approved by an ordinance adopted by a four-fifth’s vote of the City Council in accordance with Charter Section 500(D).