Eric Church, though his impressions list is longer than just those two.
He decided to further pursue the voice acting so he put together an audition tape. He shared the tape with the show for everyone to hear and comment on. In Eddie's tape, people can hear him do impressions of Luke Bryan, Eric Church, Forrest Gump, Cookie Monster, and the Home Depot guy to name a few. He thought the audition tape was really good, however
Bobby Bones gave him some constructive criticism to rework it with more original voices rather than impressions.
You can hear the entire audition clip and the show's responses