Discord, the massively popular messaging platform for text, voice and video has now been fully Verified on Flathub and so it's now official from the developers. It's been available on Flathub for quite some time, although like many other packages, it was not being maintained by the actual developers.
This was announced on Mastodon by Cassidy James Blaede, who works for the Endless OS Foundation (and who co-founded elementary, Inc. and was a UX Architect at System76). Blaede recently mentioned they've been dipping their toes into "volunteering as a Flatpak/Flathub developer advocate—basically, providing a human contact at a real company that can help larger apps/companies get their apps in front of Linux (and thus Steam Deck!) users".
While you're here - come join the GamingOnLinux Discord!
Hopefully more developers will get their apps onto Flathub and be Verified in future.