What's the point of bringing up that GrapheneOS is based on AOSP when every single option on the list they provided is baed on it?
/e/ is based on an outdated version of the Android Open Source Project and adds a bunch of privileged Google service integration to it. /e/ has more connections to Google services than AOSP and gives highly privileged access to Google apps/services out-of-the-box.
/e/ does not provide essential standard patches and protections.