From Publishers Weekly:
There are picture books that engage, transport, amuse, intrigue, enchant, comfort, or even haunt adults, but that don’t connect with the children who are their purported audience. This would be absolutely fine—picture books are a unique and endlessly variable art form—but it can be hard to overcome customers’ resistance to buying them for themselves. As one of my bookselling colleagues said recently, people will spend $40 on glossy coffee table art books they’ll look through once or twice, but are reluctant to buy themselves an $18 picture book they can’t stop leafing through in the store.
I’ve had more than a few customers over the years pore through picture books, then sadly place them back on the shelves, saying, “I love this, but I don’t have little children in my life anymore.” Good news, my friends: Picture books are not just for children, especially now.
Why have we come to a place where picture books are relegated to the landscape only of the very young? It was not always thus. We didn’t used to hurry children away from picture books into beginning readers and chapter books at age six, the way most parents do now.
. . . .
Parents often dismiss picture books as an entire class—not registering their relative complexities, subtleties, and nuances. They don’t want to spend money on books they think are beneath their children’s intellectual capacities. Even in the span of time I’ve been a bookseller (22 years), I’ve seen word counts shrink and parents push their children out of picture books younger and younger. They may not understand that the language in picture books may be much more sophisticated than the chapter books they are eager for their kids to read.
Link to the rest at Publishers Weekly
Here are some of the picture books mentioned in the OP. Each has Look Inside enabled to provide an expanded view of the images and design. If clicking on the cover doesn’t work, I’ve included a text link below each cover.