Light Group - entity IDs - where'd they go?

For reasons I won’t go into here, I decided to completely start my hassio instance over and am building it up component by component.

I’m starting with lights. I have a bunch of them - primarily Hue bulbs, but also with Yeelights and Ikea bulbs mixed in.

I’m creating Light Groups…an example would be for 4 lights which are in a ceiling fan. I want to include those in “regular” groups, but I no longer can find the entity IDs of the Light Groups to include. They don’t show up anywhere…Configuration, entity customization…nada.

I feel like I was able to get to them on my past install…am I incorrect? Were they never available and I’m just making stuff up in my head?

Build Info:

Screenshot of a light group…it works A-OK through the UI:

Screenshot of Light Group entity from Customization section of the setup node: