
Which technique you gain isn't "predetermined". Obito's spirit possessed Kakashi and gave him both Mangekyo Sharingan That's the reason Kakashi (And Obito) for instance cannot ever achieve a Susano'o individually, but could when Susano'o is achieved once you control both of the techniques in your eyes, regardless of what they are.It's unknown if he can also any other Mangekyo Sharingan abilities with it (like Amaterasu or Tsukuyomi). Danzo can use Shisui's Kotoamatsukami, since he has his eye.Kakashi has Kamui as well, since it's technically Obito's eye.Madara's ,Izuna's, and Indra's eye techniques were not revealed.Shisui has a different one, the Kotoamatsukami.Obito also uses "throw-away" Sharingan eyes for Izanagi. Sasuke used Amaterasu and Kagutsuchi, which allowed him to shape and control his Amaterasu.Itachi had access to Amaterasu and Tsukuyomi.Mangekyo literally translates to kaleidoscope, where each time you look you see a different, symmetric shape. Each Mangekyo is given a different eye pattern, and a different ability.
