Where does my group.* entities come from / are they defined?

I’ve been using the old way of difining them through the groups.yaml file, but want to migrate to them being defined in the helpers section as light groups instead. However I’m facing a problem. After having removed the groups: !include groups.yaml line in configuration.yaml and removing the actual file, groups.yaml, and restarting Home Assistant, i still see all of my group.* entities . I’ve looked through my various yaml files and cannot find anything that could define any groups. Is there somewhere else in the GUI i have to take a look at?