I like the notifications grouped by app, it lets me scan and clear an entire app in one go, vs clearing each individual line. Less labour, less friction, more likely that I'll use notifications.

I've ordered the apps to show the app on top which I'm expecting important info from.

Tbh, I've almost all notifications off as well, my default for almost any new app asking to notify me is DENY.

In app choices of which sort of notifications you'd like to receive would be great, whether in the app itself or in system settings.app in the apps settings (ideally they would reflect). But failing that, it's mostly off except for anything that is actually important, then ordered by app importance.