From the specs it says it works with HID stuff, so an Xbox 360 controller should work just fine. Late last year I bought an Xbox One controller, the most recent of which work on Macs without needing a wireless dongle, and it’s pretty nice. Slightly different feel and layout than my trusty 360 controller (what I built Cut Glove around), but the fact that it’s wireless natively is quite attractive.
One of the thing I’m wondering is if that will work with the norns, since I think it’s just HID-over-wifi, as it works sans driver. Having to plug in a 360 controller isn’t the end of the world though.