One rumor I believe is Trey Lance to SF.
Trading three #1's for Mac Jones just doesn't seem like the way to go. No disrespect for Jones, but both Lance and Fields have a much higher ceiling. Trust that Shanahan can develop a quarterback and go with the higher upside, even if it takes a few years to unleash it. Now, as far as Lance versus Fields I can't say who has the higher upside.
If SF takes Lance, I think that Atlanta likely takes Fields. Meaning, the Dolphins are probably stuck at #6. I think Denver would be targeting Fields or Lance.
All speculation, of course, until the draft unfolds.