Is this just a coincidence or is it normal for the shorter lenses to need more adjustment? I have not yet taken any sample images with the adjusted lenses - maybe tomorrow - to see if there is a noticeable difference.
As scalesusa says, wide aperture (fast) lenses tend to need adjustment more than narrow aperture (slow) lenses, because the latter have a deeper DoF which masks the effect of inaccurate focus. Like slow lenses, wide angle lenses have deeper DoF, so in theory should be less in need of microadjustment.
But, microadjusting wide angle lenses is more challenging than longer lenses, and more prone to error. In part, this is because the adjustment is usually performed at a fixed ratio to the focal length (LensAlign suggests 25x, Chuck Westfall suggests 50x). 25 times 35mm = ~34 inches, which is pretty close, quite likely closer than you're usually going to use the lens. The other reason it's challenging is that because of that close distance, the process is more affected by an imperfect alignment of the camera and the focus target. Even though the DoF is the same if the aperture is the same (e.g. 35mm f/2.8 has the same DoF as 200mm f/2.8 at 25 times the respective focal lengths), at the closer distance with the wide lens, the angular difference of a misaligned target has a bigger impact. That's why the better commercial adjustment tools have features that allow you to accurately align the camera to the target (something the on-screen moire pattern lacks).