Hello JJ,
We're working on extending our threat intelligence models and SCA benchmarks right now.
Currently, as you've noticed, the Debian10 CIS benchmark is used on all Debian-based systems as they are somehow compatible, but yes, we will add soon some specific benchmark for concrete OS such as the different ubuntu versions.
The ubuntu SCA files are currently under development, you could keep an eye on the process right here:
https://github.com/wazuh/wazuh/issues/7662, I could not confirm the version where they will be released but, as soon as they are merged into the master branch you could easily download them and test them out.
Here you have some instruction about manually adding SCA policies, please have in mind that you could always create your own policies based on CIS benchmark or whichever criteria you have. We strongly encourage you to try this and share with the community your work!
I hope this answer your question, please do not hesitate to ask again if you have further questions.
Best regards,