I like the card Scruffy picked.
Would recommend no flags.
Yes, say the part about AA. However, leave the rest of the left side for names preferably. Countries is impersonal. Again, I recommend first name and last initial - no handles.
Edit:
If there is an issue with who to list, I would start with anyone who logged in in the last 3 months and go from there. 100 is a nice number of names.