oligarch
From Longman Dictionary of Contemporary Englisholigarchol‧i‧garch /ˈɒləɡɑːk $ ˈɑːləɡɑːrk/ noun [countable] a member of a small group of people who run a country or organization —oligarchic /ˌɒləˈɡɑːkɪk◂ $ ˌɑːləˈɡɑːr-/ adjectiveExamples from the Corpusoligarch• Thanks to Macaulay, he lives in history as the very type of a Whig oligarch.