Another option that I have found that makes things easier when you have a short wire is to use a Wago compact splicing connector.
The quick release tabs make it really easy to slide it on and then flip the tab down to lock it in place without having to twist (wire nut) or push (push on connector).
I would avoid putting two grounds under one screw, I am not an expert but I have read things various places that say not to put two conductors on a terminal meant for one and most terminals seem meant for one conductor.