Epigone:
A less distinguished follower or imitator of someone, especially an artist or philosopher.
‘the humdrum compositions of some of Beethoven’s epigones’ [Oxford Dictionaries]
From “Why do people such as Lindsey Graham come to Congress?” George F. Will, WaPo:
[Senator Lindsey Graham (R-SC)], who is just 1 percent of one-half of one of the three branches of one of the nation’s many governments, is, however, significant as a symptom. When the Trump presidency is just a fragrant memory, the political landscape will still be cluttered with some of this president’s simple and empty epigones, the make-believe legislators who did not loudly and articulately recoil from the mere suggestion of using a declared emergency to set aside the separation of powers.
Whatever you think of Will’s opinions, you gotta love his word choices.