Cleared Pace off the wall of shame. I'm working on Metra. Thing is, gtfs-data-exchange is the canonical list of agencies _with_ open data, whereas CityGoRound is the canonical list of agencies _without_ open data. In order to get an agency off CityGoRound's wall of shame, it needs to be added to gtfs-data-exchange.
In any case the new #10 non-open-data is Cincinnati's Go-Metro system. They're on Google Transit, which means they publish a GTFS feed, but apparently only to a single corporation.