I find the embargo on "list questions" a bit strange and arbitrary, the more I think about it. I don't think the expected, or assumed, format of the answer should be relevant to the decision to close. These will probably fairly frequently be too broad. If the question really isn't too broad, I find myself going back to that same old piece of advice:
If a question sucks, downvote it!
If it lacks research effort, isn't interesting, or just rubs you the wrong way, you can always downvote it. Your reasons are your own, and no one can tell you otherwise.
But why this special treatment of list questions? What makes them special? I see nothing that makes them intrinsically different from any other question.
If the list being requested requires an in depth survey of various cultures' mythologies (or is just way too long), then it's too broad. Close as such. (downvote optional)
If it's what has been referred to previously on SE sites as a "shopping list question", then vote to close as opinion based. (downvote optional)
If the question is readily and completely answered by a quick jaunt over to wikipedia, then downvote it. Lacks research effort is right there in the hover text.
Questions whose answer will be a list don't require special treatment. We should judge them on their own merits, using the same criteria as other questions. The tools used for every other question are quite adequate for list questions too.
Another point here: We need to stop conflating this with shopping list questions. They aren't the same thing.
The example here could be seen as too broad. It's asking for a broad survey across all myths. Doesn't matter that an answer could be a list. Whether answers take the form of a list, a single name, or a brief explanation doesn't change that one bit. Honestly, whether this is on topic or not seems to me to be more about whether we allow myth idenitification questions, rather than anything about list questions. Tentatively...myth identification questions seem to be going sort of all right-ish, so far, I think...
(Was my phrasing of that last sentence uncertain enough to avoid being quoted on it?)