"Commonwealth agency." Any of the following:
(1) Any office, department, authority, board, multistate agency or commission of the executive branch; an independent agency; and a State-affiliated entity. The term includes:
(i) The Governor's Office.
(ii) The Office of Attorney General, the Department of the Auditor General and the Treasury Department.
(iii) An organization established by the Constitution of Pennsylvania, a statute or an executive order which performs or is intended to perform an essential governmental function.
"Judicial agency." A court of the Commonwealth or any other entity or office of the unified judicial system.
"Legislative agency." Any of the following:
(1) The Senate.
(2) The House of Representatives.
(3) The Capitol Preservation Committee.
(4) The Center for Rural Pennsylvania.
(5) The Joint Legislative Air and Water Pollution Control and Conservation Committee.
(6) The Joint State Government Commission.
(7) The Legislative Budget and Finance Committee.
(8) The Legislative Data Processing Committee.
(9) The Independent Regulatory Review Commission.
(10) The Legislative Reference Bureau.
(11) The Local Government Commission.
(12) The Pennsylvania Commission on Sentencing.
(13) The Legislative Reapportionment Commission.
(14) The Legislative Office of Research Liaison.
(15) THE LEGISLATIVE AUDIT ADVISORY COMMISSION.