Looking for help choosing the correct stock recovery.img file for my phone
The stock recovery booted perfectly fine. On Pixel, Moto , Nokia and several other devices, you will be presented with No Command screen. You need to follow the following combinations to proceed to recovery from there:

At no command screen:


Press and hold Power key.
Press and release Volume Up key.
Release the power key.


You will be in the stock recovery. If that works, you can flash the image to your recovery partition.