I don't really see melancholy and depression in Mouchette, I see despair more.Maybe it does lead to melancholy, but I think Bresson draw the portrait of a girl too naive to know what's going on with her, and you can see the smile on her face during the whole film.
But I love the rest of your list, especially the fact that you added "Taste of Cherry" and "In a Year with 13 Moons".
yes, i know, it all seems so dark and pointless, the nights get ever longer, the leaves are gone from the trees, all is decay, oft i am encumbered with a sense of inescapable loneliness, i could hardly be bothered to look at this list or even finish this sen