I'm wondering if there is a centralized list of airline lounges that are kid friendly. The best way I can think of describing kid friendly would be those that either: a) have dedicated family rooms, b) complimentary unreserved conference room use, or c) just aren't very busy. I've experienced a and c before, and spoke with a family that experienced b.

I know that DCA is generally empty, all three IAH and at least one EWR have family rooms, and at 6am the kids are too tired to bother anybody in SLC. but, I don't know about any other airports, especially hubs.