User blog comment:Hackandslash1994/Who is DC's rendition of Captain America ?/@comment-1038387-20140922133238

That was Commander Steel - though he only used that shield in the series finale, that was a Parademon's shield. They look similar, so they threw that shield thing in as a joke.

As far as genuine Captain Americas: there's General Glory, who is a parody, as is Americommando. Amalgam Comics gave birth to Super-Soldier, a mash-up of Cap and Supes. Personally, I think the closest DC has to Captain America is Captain Atom.