Thank you for a fascinating post. I savored every syllable. I am a big Van Gogh fan, but my artist friend is a massive one. I wish I could remember every word he said about Van Gogh. He mentioned something about a particular self portrait Van Gogh painted 3 times, iirc, and how two of them were done via [the artist looking at himself in a] mirror and the third wasn’t. Don’t quote me; I’m already making a mental note to ask my friend about it the next time we speak.
Anyway, your observation is so intriguing. I hadn’t thought about it, but it’s true. Monet’s paintings are just there, in all their breathtaking, genius glory. Van Gogh ignites the imagination w questions about the backstory of [at least some of] of his work. That is a gift, and as you aptly said, not many have it.