I usually keep two, and sometimes three or four contact sheets
Actor contact: everyone the actor needs - just basics: cast, PR folks, producer, director, SM team, location of theater, location of rehearsal hall, box office number - once the run starts, I add running crew and keep copies in the front of my notebook and in the booth (handed out at first rehearsal, given to cast, PR, Costumes, producer, director, SM team) (hope I'm not forgetting anyone in my pre-tech brain)
Production Contact: the full production team, including producer, director, sets, lights, props, sound, costumes, SM team, PR - (handed out at first rehearsal or production meeting to all production team)
Personal contact: very often folks have private/back numbers they don't want spread far and wide. This is my personal contact sheet, the one that lives with me until we close = this can be the director with a private cell or an actor's work number or a star's home. Anything that doesn't get shared and only gets used in emergency
Final contact: this is a conglomerate of everyone who has had anything to do with out show and includes all info they are willing to share (I copy it off the Emergency Contact that gets filled out at first rehearsal - my form asks what they want listed on the final contact) - goes to everyone with last performance