Ignoring the battery consumption with AoD on the FP5 for now …
There are a lot of apps in the playstore, which offer some notification LED kind of functionality.
Some of them let the edges of the screen glow, some the LEDs around the front camera, others simulate an notification LED like some probably want to have it back.
Most of them I could not install as they are payed (or with in app purchases) and I will not purchase an app, which might not work at the end. Also no gapps here and only using the Aurora Store.
E.g. Holey Light - IzzyOnDroid F-Droid Repository is open source, but only works for Samsung and Pixel. Asked in the TG channel (about support for the FP5) and the feedback was:
The app is built for non standard Google/Samsung apis
So eventually this is the same for some or all the other apps as well.
So long story short:
If anyone knows a free version of such an alternative, let me know!?
(I don’t like the flash light or flash screen ones - to bright and annoying IMHO)