It's not a priority but GrapheneOS does better at deGoogling than other OSes, including adding features to the OS so people have fewer reasons to install Sandboxed Google Play. One big example is Network Location, so now users don't have to grant Google Play Services location permissions.

Sandboxed Google Play is never preinstalled, so people who wish to deGoogle can do so. And I'm sure GrapheneOS users who don't want to use Google devices will be happy to get a supported Motorola in the future.

GrapheneOS doesn't include Google Play (Services) on fresh install, user's explicitly can opt-in. It seems to be the only AOSP based OS that doesn't make any connections to Google by default [1], and is therefore the only true de-googled AOSP OS.

1: https://eylenburg.github.io/android_comparison.htm