I would stop after season 5 of Supernatural because apparently it's the natural ending and it is milked for all its worth after that.
I have never seen any of these series. Which would you recommend watching first? I like fantasy, sci-fi and political shows so genre is no problem. Live action TV shows I have already seen include Lost, Breaking Bad, The Wire, the Sopranos, Daredevil, Ozark and some others. Others shows I have watched or am currently watching include Once Upon A Time, Person of Interest, Danish version of the Killing, Les Revenants.
I also like anime and cartoons.