LLC is just another form of corporation, so that would work.

DBA, however, isn't going to do the trick, because (say your name is Jack Schwank) you need to put on there, "Jack Schwank, d/b/a (or doing business as) Schwanky Bob."    That doesn't give you any privacy at all, because you need to state the real name in the course of claiming copyright ownership in the name of Schwanky Bob.   

Dave Oesterreich