[Sailjail Sandbox] Documentation about sandboxes and permission sets?

Since SFOS 4 introduced Firejail for sandboxing I was wondering if there’s some sort of documentation about the enabled sandboxes and available presets.
firejail --list lists only two enabled sandboxes, one for voicecall-ui, the other for jolla-calculator. Are there others? I’m missing sailfish browser, for example.
/etc/sailjail/permissions/ has a bunch of permission sets. It would be nice to have some sort of description about the particulars.