I think QQnon is a non factor in almost everything. They wouldn't have any relevance at all, imo, if the media didn't pump them up as a threat. It's simple; in order to appeal to the types who believe what the media tells them, in conjunction with needing reasons to hate Trump or others on the right, the media makes them out to be more significant than they are. Same with white nationalists in general. They were under rocks where they belong, getting no publicity at all until the left decided to label Trump a white nationalist, and boom, there's your threat.
"There are a lot of posters here who think Trump is still President."
Rightly or wrongly, he isn't, and those people need to suck it up and deal with reality.
Regarding the documents on the whole, I think people are missing the boat. People who hate Trump will believe whatever the media tells them about why he did it and what's in them. Selling nuclear codes. Really? I guess the media believes the old notion that if you want people to believe a lie, make it a really big lie. I figure he took them because they had some personal value to him, and that means something that would have to do with being re-elected, because it seems that's what he's all about right now. So that means these docs have something to do with who was behind the now proven to be wrong Russian collusion narrative. Yes, pure speculation on my part. I think all those other things you mentioned are not quite proven yet, but that's okay.
With Biden's docs, quite similar, but not to prove his non-involvement in something, but instead to hide his involvement in something. Again, pure speculation. Since the docs seem to be about Ukraine (and maybe China) it would make sense that he would try to bury those, *if* they would implicate him in Hunter's pay to play schemes. We know the Big Guy was getting his cut, or at least it seems that way, so why else would he have docs about those countries?
Then we find out the latest batch of docs he has include some from when he was a senator. What was he doing back then that he had to hide? And yes, since I'm speculating that Biden had docs to protect himself, it's entirely possible that the same is true for Trump. I don't know what that might be. Maybe he was trying to sell nuclear codes after all?! Ha!