While I don’t know about classification standards by the rest of the Executive Branch, I do know that under classification standards for the US Military, the classification of documents because of embarrassing information about individuals is forbidden.
By definition, Top Secret information would cause “exceptionally grave damage” to national security if disclosed.
Revealing that the leader of the most powerful nation on the planet is completely incompetent would be quite damaging. Of course, that cat’s been out of the bag for years, so this is an obvious ploy to save Biden from embarrassment in a election year. Campaign commercials with a confused candidate mumbling and slurring incoherently would be damaging. They just want this to go away.
Guess Biden can’t have a copy, you know, since it’s classified.