Just want to provide an update.
I found the “Gated Topics in Category” component. Its functionality works exactly how I am requesting when assigning restrictions to non-members, but instead of the paywall gate, if there could be an option to enable the copyright protections noted in Add copyright protection to tagged topics , it would allow gatekeepers to show content fully with no restrictions, show content with copyright restrictions, or show the sign up required wall as it already does.
I am not sure if this is the right place for this, but it seems like it would be added value for both the component and Discouse overall.