Here is one method.
Lets say you are looking for Masters and Tour Masters to join your CC.
Go to the WGT monthly tournament leaderboard. It is St Anrews this month:
Now switch the leaderboard to show Masters (instead of your tier).
You will get a list of 250 Masters who are obviously active this month - the ones without a CC listed are available to be recruited.
then switch the leaderboard to Tour Masters and go through that list.
You will have more than enough names in no time....