Catalog JSON Documentation?

Is there a comprehensive doc covering the various properties in the JSON that’s used for instance catalog items? Using the wizard is great as a starting point, but it seems like there’s a lot of capability hidden away that’d be unlocked by better understanding it all. I’m making some progress through trial/error, but it’s slow going.

More specifically, I’m currently curious what the displayNetworks section does. I deleted it as a test and don’t see any obvious difference with the instance that was created.

The objects like displayNetworks and displayStorage are captured during the instance wizard as it’s capturing some of the dynamic fields originally presented. They aren’t used/required in the catalog. I know when you save they repopulate, but they are extra noise that we have queued to look at cleaning up.