You could always install AOSP-based ROMs (LineageOS, /e/, etc.) on those non-Google Android phones. Google doesn’t really make any money from those (if you avoid Gapps).
If you want to avoid Android and iOS altogether, you’re going to be disappointed with Motorola as well, because they’ll keep using Android (which, just like the other ROMs, GrapheneOS is based on), leaving you with basically just Linux-based operating systems like postmarketOS, Ubuntu Touch or Sailfish OS.
You could always install AOSP-based ROMs (LineageOS, /e/, etc.) on those non-Google Android phones. Google doesn’t really make any money from those (if you avoid Gapps).
If you want to avoid Android and iOS altogether, you’re going to be disappointed with Motorola as well, because they’ll keep using Android (which, just like the other ROMs, GrapheneOS is based on), leaving you with basically just Linux-based operating systems like postmarketOS, Ubuntu Touch or Sailfish OS.