How to make Google Play services and other default white-listed system apps Doze?

Assume that I'm a user who doesn't like some system apps being automatically white-listed under Battery optimization settings and immune from battery optimization or is fed up with Play services consuming more than its fair share of battery. I'm looking for a solution which would revoke this privilege enjoyed by those apps and add them into the line where the rest of the ordinary comrade apps are waiting for the user to mark them with *Don't optimize*. (Click image to enlarge) " class="img-fluid rounded" style="max-width: 100%; height: auto; margin: 10px 0;" loading="lazy"> I've already seen [this answer](https://android.stackexchange.com/a/137699/96277) and as noted in a [comment](https://android.stackexchange.com/questions/129074/is-there-a-way-to-exclude-an-app-from-doze/137699#comment176869_137699) it doesn't work for apps white-listed by system. As of now, these are the apps white-listed by Android 6.0.1 in my rooted Nexus 6: I'm most interested in removing *com.google.android.gms*.