I am guessing the biggest part of Breitbart's Obama story died with him. It wasn't on a computer, on paper or whatever, just in Andrew's head, waiting for the right moment. Unfortunately, the right moment didn't get a chance. I wonder what he had on Barry, it must have been good. I have heard of only one other person get close to Barry's real story, and he couldn't prove it enough, though he was pretty close (he believes Barry was part of the Weather Underground!), and that person would have never been heard by many, not even in conservative circles even.
Steve Bannon and Ben Shapiro probably only knew of pieces of the story (its clear they didn't know the whole thing). Even if they did know the whole story, it still wouldn't have gone as far with Breitbart. They never will have the impact that only Andrew could have done. Neither Steve or Ben are savvy enough to outsmart the lamestream media. They react rather then use evidence effectively, so it's far easier for the lamestream to discount and marginalize them.
My guess on what Andrew had? Somehow getting Barry's Occidental and Columbia University records. Not only would it have shown that Barry not only got bad grades at Occidental. Making him unqualified to be there at Occidental, let alone getting transferred to Columbia. That in itself will surprise few, I imagine as its not much of a story, because had he gotten good grades, he would never stop talking about it. Barry was at best a D student.
The big story would be that he passed himself off as a Indonesian rather then an American. Its been talked about a little by the classmate at Columbia that never met him there, and didn't know he existed until much later. That would explain Obama doing everything he can to not release his records. He committed fraud to get into college, some of which could have been criminal.
That, or that story that the LA Times has been hiding for years now.