The
#GNotification /
#GApplication side went smoother than expected
https://gitlab.gnome.org/GNOME/glib/-/merge_requests/2207 (thanks Philip!) so chatty and calls will show different LED feedback in upcoming releases:
https://source.puri.sm/Librem5/chatty/-/merge_requests/767 once
#glib 2.70 is out.

GNotification: Allow to set a category (!2207) · Merge requests · GNOME / GLib
Some backends like the FDO one allow to set a category. This helps the notification daemon to select a proper feedback type. Closes: