superseders

/ˌsupərˈsidərz/
noun
  1. People or things that take the place of someone or something else, especially by being more advanced or effective.
    • In the company, the younger managers were seen as superseders of the retiring executives.
    • The new software was one of the most successful superseders of the old operating system.
    • Electric cars are becoming common superseders of gasoline-powered vehicles.