I did comment on one of them but found it somewhat odd to see this split up into three videos. If it's all part of the process for a single image, you could simply allow the change in music be the indicator for each section of it. That and/or the built-in feature to segment your video would allow you turn it into chapters for a viewer's preference.
"These two were my first exposure to the whole sun/moon motif and it’s now one of my favorite motifs."
Definitely noticed that about you through your favorite'd art. The motif is interesting, for sure, especially whenever I saw depictions of it in small shops that sold various baubles, jewelry, and artwork. It's not one that grips me as strongly as it does you since I tend to focus more on stylistic interpretations of just the sun primarily due to having lived in Florida for years. The only exception to this is the Pokemon Lunatone. I just think it's cooler than Solrock and was part of my primary team back when a friend convinced me to play Alpha Sapphire.
As for this piece specifically, it's another amazing reminder that no matter how many times you point out minor flaws in your works, they're always going to be overshadowed by your dazzling emphasis on colors.