The common Logitech steering wheels should work if you have the steam-devices package installed on your system. Alternatively you can get the necessary udev rules from the oversteer repo: https://github.com/berarma/oversteer/tree/master/data/udev

(oversteer is also pretty handy)

I’m on holiday right now but I can get back to you on how to get Assetto Corsa with Content Manager to work.