For now, all notifications are sent from one channel, they have the same icon. I recommend that each notification type should own a channel and icon.
Once each notification type owns a channel, we can choose which notifications pop up or not. Also, the icons help recognize notification types.
The types of notifications are as follows:
  • Invites (includes replies)
  • Invite Requests (includes replies)
  • Friend Requests
  • Groups (e.g. Join Request, an announcement from groups)
  • Other (e.g. promotion of trust ranks, Impostor generation)
In addition, the notifications and channels in the attached image were generated by the application I created. there is no exist in the original app.
Read more about notification channels: