Setting up mfi steelseries nimbus controller/xbox/playstation

Hello all,
So I am using Mac OS for Level Editing and was wondering if there was a plugin for mfi steelseries nimbus controllers for the inputs just so I can test in game. The movement of the player works fine but the buttons are unresponsive.

Also, is there compatibility Xbox one and playstation controllers for testing game purposes? If so, please advise me in the right direction.

Thank you kindly:)