Depending on how much separation you want, my method of reusing org categories as roam-tags may also be interesting for you: What's the difference between org tags and org-roam tags? - #4 by real-or-random
Depending on how much separation you want, my method of reusing org categories as roam-tags may also be interesting for you: What's the difference between org tags and org-roam tags? - #4 by real-or-random