Thankfully, I haven't even started most of the PS4 games I want to play on PS5 yet.
Spiderman I'm doubtful will transfer which is annoying because I wanted to do an Ultimate difficulty NG+ run on PS5, it seems like its classed as a whole new release, like DMC 5:SE, but who knows.
I'm half-way through Ghost of Tsushima so I'd hope I can transfer that one but if I have to restart it won't be the end of the world because I want to see everything in 60 fps anyway and I bet I could redo everything I did (in 25 hours) in ~10hours anyway because I walked around and looked at EVERYTHING and I won't be doing that this time.
Oh man I really wish the GoT PS5 BC details will come out soon because I really just want to finish it on my PS4 suddenly. I just played like five (5) Mario games in a row and I need some blood lol.