It only shows Drive (for each account), Bug Reports (?) and System Traces (?). Of course, I just restarted my phone to see if it fixed it. It did, but as soon as I try a second time it’s gone again.
I mention Discord but I’m pretty sure this file picker screen is not directly associated with Discord.
Update: This is affecting a friend of mine as well in the same way from the same time. Haven’t determined if it’s just Discord yet.
Update 2: Alright, if I scroll to the photos instead of selecting “files” then go to “all albums” I see Google Photos. Not sure what changed to make it like this but at least now I know.
In google photos, preferences, photos view, there are some settings which could have been changed. See if something is different on your end.