I've thought of Bannon as the MAGA Goebbels, but he isn't a very good fit. Goebbels actually controlled the propaganda machine, and while there is the remarkable and highly effective Conservative Propaganda Machine, it is fairly decentralized, with no single person in charge. Certainly it isn't directly operated by the Trump administration.
The closest might actually be Rupert Murdoch, but he doesn't work for the administration, and his propaganda isn't specifically American.
I don't think we have a Goebbels yet, but they may emerge when MAGA takes full control of the American media, and issues guidelines for productions.