Hmm.. I guess I'd classify myself as a "high midcore" since I don't think I posses any "natural skill" outside of familiarity from playing the game for such a long time. But I think I could move into the "low hardcore" if I wanted to, just a matter of how much stress I feel like placing on myself to do better lol

But, sort of a long the lines of Aana's comment, I think player usage of casual/hardcore terms is very subjective and requires context of the conversation. IMO it's a combination of skill and time invested. It's very to easy to have players on both sides of the spectrum which is why context is needed (time vs skill vs accomplishments). This kind of list is helpful if you're trying to figure out where you fit as a player, but as Aana states it'd be difficult to try to assign everything in between the extremes. Overall it's not a bad attempt, though.