If you type in a custom off-topic reason, that reason will be available for anyone else to use. I can't test it right now, but I'm pretty sure multiple custom reasons can be seen if different close-voters type them in.
Here, go to this question: Push code from GitHub to (suppose) GoDaddy automaticallyPush code from GitHub to (suppose) GoDaddy automatically Vote to close it as off-topic, and you should see what I just typed in. But don't select that, pick "other" at the bottom and type in a close reason.