Thanks to everyone here, I now have no stickers on my visors. I bought a new 2016 Ford Explorer XLT, and love it, except for those stickers. So I followed the advice here, and it worked. They are gone, and you would have to carefully examine the visors, in extremely bright light, to see any indication that the stickers were ever there.
A couple of thoughts.
Yes, the stickers peel off. It's a bear, though, getting them started. But once you do, careful that they don't tear off in pieces,rather than all at once. No big deal if they shred; just takes longer.
The Goo Gone worked - but be careful with it - it will spatter everywhere. Wipes off clean, especially with a damp paper towel, but still.
In my experience, the microfiber didn't work. Tried and tried. No good. And I felt I had made a BIG mistake, since using the microfiber cloths and Goo Gone, I was still left with three very obvious patches of shiny glue. I thought I had ruined the visors.
So I soaked one of those blue shop-type paper towels in Goo Gone, and really leaned into it. That worked. Took a while, though...about an hour total. But it worked.
The stickers are completely gone. And the car interior looks 100% better. No distractions above the eyes, just the road ahead.
Thanks again for the good advice here.