It's ortholinear, so unlikely to follow typewriters, and I don't recognize it being based on letter frequency of languages I know (while the first row is a video game name).
Unless these are commands that just look like letters.
@tsia_@chfour So commands that look like letters, or Etaoin shrdlu-style frequent letters first keyboard. Reasonable (and completely alien with no knowledge of CNC).
@chfour Dvorak is so 1936, GNOP789 is all the hype