No problem!
So I grabbed the (apparently widely used) 360 Controller driver off github (https://github.com/360Controller/360Controller/releases) and tested it connected via USB with the lastest release (1.0.0-alpha.3) and everything works as intended!
It could be this problem exists in other games on the mac, it might be a known thing with Mojave or something. I haven't played a game on my mac in a little while (still building my PC).