No one (other than the FBI and the judge involved) knows what the search warrant yesterday is about, and the reason there is so much speculation is because with Trump, there was so much criminality that we know of and so much potential criminality.
There is one person who could settle all that. Trump. He could release the content of the search warrant right fucking now if he wanted to. The target of a warrant is not bound by any confidentiality. He could walk to any microphone in the western hemisphere and there would be dozens of reporters there eager to hear all about it and look at the warrant and broadcast it.
But he won’t. Because he’d rather people speculate and he would rather play the victim.