Lizard I'm relatively new to GOS since I got the P8 so take this with a grain of salt, but just sharing as you asked:
Owner > Empty except Obtanium, Neostore, Aurorastore so I can download apps and push them into other profiles
Primary > All foss apps, trusted apps, apps which do not require google play
Google > Google apps, apps which have known trackers, google play installed
Finance > Banking and anything else money related
This is how I've set it up so far, but this may change once I've found out if this is too annoying!
What is the proper way to use same apps in both Owner Profile and in User Profile? Can you install apps in User Profile and push those apps to Owner Profile or do you have to first install apps in Owner Profile to push that to User Profile?
If you install apps in a User Profile, will you get notifications from user Profile to Owner Profile?