Those are awesome! My first one is my favorite one.
I've made bunch of them, trying out different animations, small adjustments. eventually came up with several doable ones.
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I love the Close Your Rings one. How did you capture it?
I think you just need the right video, and then use INTOLIVE and change it into Live Photo, then set as watch face photo.
The close ring one is made by someone else, I just made the video into Live Photo.
Other than that one, the rest are made from scratch, animated, rendered and converted.