Missing: sector, popular consent, self-interest, elite

Further, the dictionary definition of "system" does not match the one you provide. Groups of people are not "systems".

220 dict.dict.org dictd 1.12.1/rf on Linux 4.19.0-10-amd64 <auth.mime> <46521789.8886.1625096684@dict.dict.org>

150 84 definitions retrieved

151 "System" gcide "The Collaborative International Dictionary of English v.0.48"

System \Sys"tem\, n. [L. systema, Gr. ?, fr. ? to place together; sy`n with + ? to place: cf. F. syst[`e]me. See {Stand}.]

   1. An assemblage of objects arranged in regular
      subordination, or after some distinct method, usually
      logical or scientific; a complete whole of objects related
      by some common law, principle, or end; a complete
      exhibition of essential principles or facts, arranged in a
      rational dependence or connection; a regular union of
      principles or parts forming one entire thing; as, a system
      of philosophy; a system of government; a system of
      divinity; a system of botany or chemistry; a military
      system; the solar system.
      [1913 Webster]

            The best way to learn any science, is to begin with
            a regular system, or a short and plain scheme of
            that science well drawn up into a narrow compass.
                                                  --I. Watts.
      [1913 Webster]

   2. Hence, the whole scheme of created things regarded as
      forming one complete plan of whole; the universe. "The
      great system of the world." --Boyle.
      [1913 Webster]

   3. Regular method or order; formal arrangement; plan; as, to
      have a system in one's business.
      [1913 Webster]

   4. (Mus.) The collection of staves which form a full score.
      See {Score}, n.
      [1913 Webster]

   5. (Biol.) An assemblage of parts or organs, either in animal
      or plant, essential to the performance of some particular
      function or functions which as a rule are of greater
      complexity than those manifested by a single organ; as,
      the capillary system, the muscular system, the digestive
      system, etc.; hence, the whole body as a functional unity.
      [1913 Webster]

   6. (Zool.) One of the stellate or irregular clusters of
      intimately united zooids which are imbedded in, or
      scattered over, the surface of the common tissue of many
      compound ascidians.
      [1913 Webster]

   {Block system}, {Conservative system}, etc. See under
      {Block}, {Conservative}, etc.
      [1913 Webster] Systematic
.