I spent 3 hours trying the submissions, however on 4 of them, I didn't manage to get my controllers to track.

• Casting Vibes VR
• Feet is Jump!
• Space Walk
• Who's a good boy
  
  Feet is Jump! wanted me to install Vive Super Reality SR Runtime , but then when I disabled the Vive OpenXR API layers they worked fine!
  I'm using Vive Pro 2 and Index controllers, with SteamVR as the OpenXR framework.
  
  Who's a good boy? still didn't work however for me sadly

Index controllers should just work through SteamVR without requiring any layers. Possibly requires a restart.
I have noticed that SteamVR gets confused sometimes depending on how the action map is submitted but again a restart usually helps. Someone also mentioned that his project name got in the way (we sent the project name along with the action map so Steam VR can display it in the bindings editor, but I guess it doesn't like all characters)

The Index Controllers work by default with native SteamVR HMDs, but some PCVR Vive headsets (Vive Cosmos, Vive Pro 2) requires a additional software running (Vive Console)

It comes with OpenXR layers, since Vive Pro 2 can do hand tracking (but no one uses it) and it seems it took priority

After disabling them no issues :)