iPhone

I've just switched back to an iPhone after 10 years on Android, so forgive me if this is an obvious question.

I'm trying to setup a bedtime focus so that I only get notifications from specific apps - doorbell app, etc.

Logically, the way to do this is setup an explicit whitelist for those apps in my Sleep focus, on the assumption that anything else is muted. And this seems to work... for other apps.

But, system sounds still make noise - lock sound, going on charge, etc.

Is there any way to mute those sounds in a Focus? I thought the Silent Mode filter would do that, but that also turns off the notification sounds for the whitelisted apps. This seems a little counterintuitive to me, but it is what it is, I guess.

It seems like this should be an obvious thing to want, but I can't find any useful help content anywhere that explicitly talks about this. Or it may be that I'm not searching using the right Apple terminology.

So, short version: is there a way to selectively mute system sounds using a Focus, while still allowing selected apps to audibly notify?

Thanks in advance.