This came up in this thread on #49:

Would it be possible to list these events normatively, instead of only giving some examples?

I think the current text is OK, because the lack of precision here is just a symptom of the larger lack of precision in how mouse events are specified in general. Some progress is being made there, in w3c/uievents#200, and if that lands then eventually this paragraph can move into the UI events spec as an actual change to the processing model.

But in the meantime, it would help achieve interoperability if you were precise about the list of events.

For example, it's not clear to me whether pointer events are impacted by this change.