I got in touch with turbotax support about this. They said that this form is not available for Ohio e-file, so I will need to mail in my return anyway. However, that doesn't explain why the form doesn't show up in any print previews of my collective Ohio forms.
I did discover that I can access only the PDF of this form from within forms mode: Open form IT NRC -> File -> Print Active Form...
This at least lets me print something to include with the rest of my return so I don't have to re-create the form myself separately.
I also found another issue that looks related, but is for the Online edition which I'm not using: https://ttlc.intuit.com/community/state-taxes/discussion/ohio-it-nrc-form-is-not-included-in-final-t...
