I don't know how y'all are built...I'm squatty-waist and hips are about the same (unfortunately!)...built like a gymnast-broad shoulders. What works for me & my back may not work for you. I needed to add some size to my lats and have found awesome results from lat pulldown machine and wide grip cable rows.
i suggest you try seated rowing with a wide grip, as wide as you can, keep your back straight, no swigning movement. When you get the bar as close to your chest as you can hold it, 1, 2 seconds, then release slowly, 3 sets of 12, 60 seconds rest between each set. not sure if it will work for you but it does for some. Doesnt hurt to try.