Reflection only Render Passes?

So I am currently working on a project in which I need accurate render passes to give to a nuke compositor. Basically I want to render out something to the reflection only or lighting only option that is available for the viewport.

I’m thinking about potientally creating a custom game mode for the sole purpose of rendering out lighting only but alas this is only an idea so any helpful tips would be much appriecated.

Have you found anything?

Also, is the reflection only option in the viewport usable for nuke compositing?