While SO is geared for developers. If someone takes this on, ideally it would work like StackExchange sites where one can exist for each topic.

- https://math.stackexchange.com/

- https://stats.stackexchange.com/

- https://3dprinting.stackexchange.com/

- https://ai.stackexchange.com/

- https://apple.stackexchange.com/

- https://serverfault.com/

- https://superuser.com/

- https://drupal.stackexchange.com

There’s a ton more of these.