Ok so I know it's been asked a thousand times, but what language truly should be used to make good quality games.

Out of curiosity, why do you think you'll get The One True Answer if it's never been given before in the thousands of times this question has been asked?

You can use any and there isn't a specific one

And you just answered your own question.

but based on the fact that I know a small-medium amount in C#(XNA framework), C++(just basic stuff), and Python(a little more than I know about C++)...which should I try to learn the most in right now for developing an independent, most likely 2D, game?

Any of them. Seriously, you're very likely (as in 100% likely if you actually have any interest in programming) to learn several languages as you go through life making games. Using one now doesn't prevent you from using a different one later. Just pick whichever one you enjoy working in the most. And if there isn't one that stands out as particularly interesting or enjoyable to you, put them on a dart board and throw darts until you hit one. Seriously.

Good luck

You should use the language you know best, which in your case sounds like C#. Plus, you already know some of an API that works with C#. That's a great recipe that you won't have with any other language or API right now.

The quality of games you make has everything to do with your skill as a coder and a game designer, and virtually nothing to do with the language you choose. The other factors you're hinting at are irrelevant at this point in your skill development.

Well, they could tell you which is the language (mostly) used to build core engines of games such as Crysis and the like. But as already said, that info will not make you a better coder, not will make you write your first games (which is something far more important).

Still stuck on the decision.

If you hit all the languages with a dart, you set them up on your dart board wrong ;)