If you are interested in creating Roam databases of public texts, there are two articles that you might find useful.
How I Roamified the Mahabharata (And how you can too!) by Rishi Tripathy provides a detailed explanation of how to deal with very complex texts.
Adding Texts to Roam by David Crandall provides a quick system for creating databases of simpler texts.
At the moment, the site is being updated manually so I can’t guarantee it will always be completely up-to-date. If you are thinking of working on a text, you can always check with me to see if I know of anyone else who is working on the same text.
When it is ready, please submit your database here.