That is the perfect answer, thank you!
Can confirm that all rules appear there, both from GUI and command line. I can use this as my reference point going forward.
I've been struggling with the High NVRAM usage for a while, but it's largely been under control manually running the one line command to sort it out a few minutes after boot.
However, since 386.9 on an AC68U, I have this "cool" issue where my port forwarding rules are blank on reboot. I see...