I've searched my quest 2 for installed packages and heres some interesting package names ive found.
com.oculus.systemux this is likely the system layer that shows the apps. wonder if anyone has decompiled it.
meta.skymap.service i have no clue what this is but it sounds cool
com.oculus.vrprivacycheckup maybe the mute function for the headset?
com.oculus.panelapp.kiosk this could be a demo mode for the quest - just to show it off
com.meta.automation.pauldron.vr i dont have a clue about this one
com.oculus.vrshell and com.oculus.vrshell - a shell?