You can see a list of everyone in the groups you're part of.
- Go to the group home screen
- Tap 'Members' in the banner at the top of the screen
- You'll see the first few members listed. Tap 'Show xx more' to see the full list
The list is ordered alphabetically by first name. Clicking on any of the members' photos will bring up their profile and give you different ways to interact with them.
Administrators can see additional information about group members via the web admin.