Did you check in your Admin Dashboard under Bluehost→Settings→Comments? There is an additional setting there that might be overriding the WordPress discussion settings.
I wasn’t aware of that setting, thanks. But I just checked it, and it was off. Turned it on and off again just to see, no difference either way.
Figured it out… apparently they won’t show unless you select the “break up comments” section in Discussion, even if everything is enabled.