So, the affidavit is what they based the search on? The big question is did they find what they were looking for?
That's already been released when the warrant was, they found several hundred pages of classified documents, including ones marked TOP Secret SCI which means they weren't ever supposed to leave special rooms. They found unsecured classified documents relating to national defense, that's why the espionage act was cited on the warrant. And now it's been verified they found top secret human intelligence lists.
Mainly this affidavit, says they found 14 of the boxes that they were handed over in May had classified materials in them. Then they had multiple sources saying there was more classified data there, so they asked for this search warrant. And they found what is now at least another 300 classified documents, 700+ pages total.
The nature of some of the classified documents will never be known, but when an indictment is filed we'll know some more about some of the others. The DOJ has already said that some of the documents were the most highly sensitive secrets our government holds, that's where the speculation about nuclear weapons secrets is probably coming from, although I think there has been a leak suggesting there were nuclear weapons secrets in the materials recovered.
We'll see. Of course Trump is going to claim he telepathically declassified documents that were being packed in his last moments as President, but what he doesn't know is that Dark Brandon telepathically reclassified all of those documents the minute he took the oath of office.
Of note, the President doesn't have the authority to declassify nuclear secrets, only the department of energy does and it's a process that takes years to do.