It sounds like doggy maximizes his impact but still have not found the perfect approach, even with all your Shapes. Unfortunately, anything with him standing is not going to work unless you are lifted up to align with his dick. Unless your man can do squats like Bruce Lee, he won’t be able to come down to your level. It’s going to be impossible for him to lower himself for long periods. It will take experimentation to find the alignment that works for both of you.