I checked your list and I see you haven't watched Lovers,
http://mydramalist.com/korean-drama/1069/lovers.
I'd highly recommend it. Not necessarily a gritty noir like Cruel City, but if gangsters and amazing fight scenes are what you're looking for, then Lovers certainly delivers. Plus if you like a healthy dash of romance thrown in, this is one of the best I've seen! :)
I haven't gotten around to either of these yet -- one of them is going to be my next drama -- but I'm told Lobbyist & Rondo are also decent action/crime dramas.