tempproc com.android.ondevicepersonalization.services is a standard Android Open Source Project component which is part of GrapheneOS. If that's not present then you're not using GrapheneOS. The com.google prefixed name is used by the code internally and then there are 2 package names for the app itself with and without google based on whether it's the AOSP variant or their Google Mobile Services variant. This is the same approach as many other components. There's nothing special about this case.
Vomitorius Repetitive posts with baseless claims of compromise and fearmongering about standard Android Open Source Project system components don't need a response from the project every time. There are already plenty of threads about it. We'll just make it officially against the rules.
fid03 External package name and internal package name don't need to match. The external name is often set to com.android for AOSP by default and overridden to com.google.android for Google Mobile Services variants. The internal code can be either of those and it doesn't need to match.