BuddyPress.org

A workaround is you could create your own groups loop and place it before the group directory loop in the group directory template:
https://codex.buddypress.org/developer-docs/custom-buddypress-loops/the-groups-loop/

If you know you’re not going to have to change these groups, you could just hardcode the group info with HTML directly into the template.
This saves having to create another group loop.