Going full nuclear for their press leak is a bold move. Not that some document might innocuously have the word "nuclear" on it, but they're playing this the way anti-nuclear people play up "nuclear energy" and "Chernobyl".
This is no different than "The White House only learned of the raid through Twitter", or, "Garland had no idea, oh, wait, Garland courageously signed off on it."
One side is going to accuse Trump of selling all our nuke secrets to Ukraine, and the other side, even if classified* nuke docs are found, are going to say it's a setup. I'm going to go the middle road: There's probably a document that has "nuclear" mentioned in an innocuous fashion, and the FBI is going to turn it into treason.
*There is still the question regarding any of this being classified at all. The President is the ultimate declassification authority. If Trump took these docs prior to Biden being sworn in, he always has, " I declassified them" to fall back on. Given that he followed protocol. Knowing Trump, he may not have, so there will be a question regarding how they were declassified. We also have the question on if they were actually classified at all. At this point, I'll easily believe the FBI and the administration are and will manipulate things.