Non-ergonomic keycap types: XDA, MOA, DSA, MDA The second main category of keycap profiles is non-ergonomic keycaps. These keycaps are all flat across the top and don’t have an ergonomic curve ...

Well, the Pi part should be obvious, but the rest comes from the Gherkin 30% ortholinear keyboard [jefmer] built with Gateron Yellows and, unfortunately, second-choice XDA keycaps, as the first ...