Homer and Manet, and many others, were inspired by Japanese prints and their frequent use of diagonal compositions. But, I agree, Homer is much more subtle in his use of them. And more powerful as a result.
Re Goya's Maja, the image of which is in post 90 something. The head always looks wierd on this. From the top of my head, I think this work and its clothed counterpart were made for a man with the head of his mistress painted on the top of another model. I also remember something about this also being Goya's mistress. But I'm not sure (and I definitely don't have the time to research this.)
Goya is a splendid painter, sometimes very disturbing.
Poor dog!