This - I've been very honest with my manager that I won't play "the game" in this organisation - I don't really have to, there is plenty for staff engineers to tackle to have a long career without the yoke of management.

I know this is off topic but if you ever have the inclination to write about it, I would be really interested in reading about any books, people, experiences, professional lessons learned, etc. that have been helpful to you on progressing along a non-spotlight technical focused engineering path.

I'm in a different domain (aerospace) but am trying to carve out a similar career path and am always looking for more to learn about just being a good engineer.