What procs can I look at for getting information to the HUB, such as listing what wave someone is on, the players, etc?

Also what procs can be used to post highscore info on the HUB as well?
You can use world.status to set the server's description, and you want world.SetScores() to post highscores. GetScores, SetMedal, GetMedal, ect are also in there.