Yep, that was it. I lived in Oregon at the time and had almost 100% coverage.

Ever seen sun shadow snakes? https://www.forbes.com/sites/jamiecartereurope/2020/06/21/people-in-asia-just-saw-weird-shadow-snakes-on-the-ground-during-an-eclipse-heres-why/

I saw something very similar to this during an eclipse a few years back, but it was through the leaves of the trees. Very trippy to see a bunch of crecents of light dancing around.