There are a few ways that you do to achieve your requirements.
But you have to disable Apple’s SIP which I don't recommend personally.
So, I would suggest you use this third-party application named as Mac Media Key Forwarder. Use the latest version 3.0 for Catalina.
You can prioritize which app you would like to control or you can go
with the ...
Looking up the iTunes User Guide, it defines "Explicit" as
A label—issued by media producers—that alerts consumers to content that might be inappropriate for children.
So, it appears that they are going off the RIAA's definition of "Clean/Explicit"
Additionally, I was able to find a iTunes Users Guide for PC that goes into more detail:
This is a really bad idea in my experience. I would recommend you make a family and share your Apple Music subscription (app purchases as well) so that you each can maintain your own playlists / mixes / play counts and such and only share the payment - not the actual data.
You’re able to choose different AppleID for each item that allows you to sign in so I ...
Yes - you can sign in using different Apple ID for the music app and not share the same AppleID as you do with other items like the App Store, iCloud preferences, FaceTime and Messages. In fact, you could choose a different account for each one of the above if you wanted to be creative or difficult or just had specific needs.
I use my work AppleID for ...