To fulfill the desired seamless wraparound ambrosia maple aesthetic, I decided to cap the outside vertical edges of each set of doors. Carefully matching some narrow remnants of ambrosia maple to both the side panels and the respective doors for each cabinet, I think I succeeded in this endeavor. The cap edges are a little thicker and wider than necessary, but this is simply to allow for trimming with a hand plane afterwards.
Another reason for thinner cap edging is to not present a grain conflict with the door fronts. Thinner cap edging are not very noticeable from the front whereas they present a full graphic when viewing from the side of the cabinet. In the photo, I am judiciously hand planing the extra width I allowed for each of the cap edges. I use a smaller hand plane to allow me more control of the highs and lows of the cap edge without disturbing the front skin of the door.