Why don't conservatives consider the writings of the Founders to be included in "the classics"?

With all of the cancel culture and history re-writing that's gone on, a longing has started to develop among some conservatives and conservative websites lately for classic works.

Examples may include the Iliad, anything by Aristotle or Plato, Moby Dick, Shakespeare, Cicero, Hobbes' Leviathan, Machiavelli, and many others.

The thing that I can't understand, is why aren't the Founders included in the category of the classics?