Used some of the Mautrix bridges (WhatsApp & Signal) in an attempt to combine all my messaging apps on the phone into one single app. Worked reasonably well I have to say.
The Discord bridge I never tried, mostly because my friend group is not really using the instant messaging part of Discord. We more or less only use it for voice chat while gaming or just some shit talking. Thinking about it, for this a TeamSpeak or Mumble server would probably be enough to replace our Discord usage ๐