I would like to have a listing of users and a column which shows which committees that user belongs to - where committee is a type of OG. This should not show which clubs they belong to - where club is another type of OG.

I guess I could either need an argument similar to 'Organic groups: Group node/Members are filtered for a specific group.' where a type could be specified; or a column type similar to 'Organic groups: User's groups/OG: List of user's groups' which could have a value for which content type.