I have a few older Feit WiFi bulbs that aren’t HomeKit compatible, but they support “Siri Shortcuts” in their app – which at least allows me to trigger them through Siri, as I would for my real HomeKit lights.
I have a shortcut to activate their full brightness, which works well from Siri.
I also just got a Logitech Circle View camera. It can trigger a shortcut automation event, but it looks like it can only trigger HomeKit devices, not Siri shortcuts. I missed something? (The Feit lights are out, so I’d like to have the motion sensor on the Circle View shutter that turns on the lights.)