Clownjob'd doesn't seem to have support for PlayStation controllers and I was wondering if this is allowed.

DS4Windows just converts the PS4 inputs into Xinput, and a lot of runners use DS4 controllers (including myself), it is definitely allowed.

It'd be harder to find a game on SRC that specifically disallows it tbh

Would Xbox One Controllers work also? Cause, I have an Xbox One Controller. And, I am not the best at doing skateboarding games with a Keyboard. Or, could I also use a Xbox One Elite Controller with the Adapter?