Twiface 
"[@DarkHooves":](/images/2535918#comment_9474714
)
There's probably a couple of people who think that. It's possible. But this chart is based only on what's shown in the show or what the writers have said.
"
[@Background Pony #1C9A":](/images/2535918#comment_9474705
)
Cozy Glow was a student at Twilight's school, but she never had a direct mentorship like Celestia>Twilight or Twilight>Luster. Cozy Glow was a teacher's pet, not a candidate for succession.
Princess of the Moon
There's probably a couple of people who think that. It's possible. But this chart is based only on what's shown in the show or what the writers have said.
"
[@Background Pony #1C9A
Cozy Glow was a student at Twilight's school, but she never had a direct mentorship like Celestia>Twilight or Twilight>Luster. Cozy Glow was a teacher's pet, not a candidate for succession.