“Governing body”: (a) the city council in cities; (b) the board of trustees in villages or in incorporated towns; (c) the county board in counties; (d) in townships, the electors for purposes of electing whether the township shall participate and to appropriate funds and levy taxes for municipal contributions, under Section 7-171, for the town and any other bodies politic included as a part of the town under Section 7-132.1 and the Board of Town Trustees for all other purposes; (e) the corporate authority, body or officers, as the case may be, authorized by law to levy taxes for the maintenance and operation of the municipality in other municipalities; (f) the person or group of persons having ultimate authority to expend funds for the payment of earnings to employees in participating instrumentalities; or, (g) the board itself.