First of all, let me clarify what I meant in the OP: none of the civs that have been RELEASED have been geared towards cultural victories (not even Poly). I'm sorry if I didn't make that clear, but in my defense, I was groggy.
Greece and India do OK, too. Though I am curious as to why you feel cultural victories have become more "pointless"?
First, Greece and India aren't specially geared towards culture, though they are better at than, say, Japan or the Inca.
As for why I feel they are pointless, it takes too much time to fill out five trees.
All you do is click "next turn" 50-100 times. Even if someone DOWs you, you can defend easily.
UN or science is just as dull, BUT it doesn't take nearly as long.
To the op where did you get your three cultural civs from? Did you by any chance pull them out of a hat and got lucky with one? Like others have said you missed some of the major cultural civs form your list.
They are (in my opinion), the top three civs for culture. France, India, Greece and the others don't compare, as their UAs can be leveraged for other purposes AND they don't bring in as much culture.
However, I was talking about the DLC civs. These are Babylon and Korea (science), Polynesia and Spain (expansion), Denmark (war), and Inca (defense/war).
Out of the 6 or so released, none have any major advantages when going for culture (not even spain with el dorado). I'm not happy about that.