Using 2023.5.3 it doesn’t appear to be possible to expose groups created in yaml to Alexa - unfortunate as I think this is still the only way to create groups of mixed entity types.
You can create the group in Alexa, of course, but that’s a bit messy. Are yaml goups on the way out? I only have a couple left.
No, the limitation here is that the UI can only output things with unique_id’s. Entities without unique_id’s do not show up in the new UI. Therefor, yaml is your only option.
Except that I also have several binary sensors created with templates which do not have unique IDs, but which do appear in the new list of entities exposed to Alexa.