After an extensive discussion in chat I've come to the conclusion there are some unclarities relating to list questions. In an attempt to tackle this problem in a more constructive format I first want to address a seamingly "simple" issue.
What is a list question?
I'm not interested in discussing whether a list question should be closed or not, whether it is good or bad (unless that is part of the definition of course). I am very well aware of various arguments for and against them and have discussed the subject oft times before. I just want to point out we need a clear unambiguous definition of when a question can be called a "list question" or alternatively why we shouldn't use it as a definition.
Why do we need a definition?
It came to my attention not everybody interprets this the same, but a lot of discussions about them exist nonetheless. To ensure everybody is talking about the same thing I'd like to create a permanent resource clarifying what constitutes a list question.
All too much discussion is going on about this very subject, opinions are formulated around them and moderators even act upon their very interpretation of it. So let's start by coining a proper definition.
From this definition it should be possible to easily state whether a given question is a list question or not. If no consensus can be found, I argue we should stop using the definition in discussions altogether or try to formulate a new definition which is unambiguous.
As an example of what kind of definition I am after, here is a possible definition of a unicorn:
The unicorn is a legendary animal from European folklore that resembles a white horse with a large, pointed, spiraling horn projecting from its forehead, and sometimes a goat's beard.
There no longer is a discussion whether a horse is a unicorn, as it doesn't have "a large, pointed, spiraling horn".