I vote for Pope Finis I
Happy Scrappy Hero Pope.
…you heard it here first. 
Pope Calvin N. Hobbs
Pope Ari?
Too Jewish?
Pope Hilarius Too.
And if the fates are kind we’ll hear it here last. 
Seinfeld: “Bozo the Clown. I mean, does he really need “the Clown” in his title, as clown? Are we gonna confuse him with Bozo the District Attorney? Bozo the Pope? There’s no other Bozo”
I think its time we had a Pope Bozo.
We’ll be told it’s “Sam the Pope” for its friendly appeal, but his real name will be Chandranath, since the jobs being outsourced to a call center in Bangalore.
Pope Erazzi
Pope Ignatius
Pope Pope Bo-Bope Banana-fana Fo-fope Fee-fi-mo-mope Pope!
Even setting aside the whole conspiracy theories, naming yourself Pope Peter would take some serious balls. I think most Catholics would consider it kind of sacrilege, even.
Myron Pope 
Actually, considering that there’s going to be a new SW trilogy coming out, a Pope Lando II would be perfect!
Pope Chandragupta, now that’s a name I can get behind.
Pope Koothrapali. It’s the perfect job for someone who doesn’t like talking to women.
Pope Judah
now that would be interesting
Urban Meyer.
Oscar Meyer. I mean, the popemobile really isn’t all that charismatic in its current configuration…
Pope Callixtus IV
Interesting Pope Names We haven’t had for a While (with next number in parentheses)
**Marcellus (III)
Callixtus (IV)
Eugene (V)
Celestine (VI)
Honorius (V)
Gelasius (III)
Paschal (III)
Damasas (III)
Sergius (V)
Agapetus (III)
Marinus (III)
Romanus (II)
Formosus (II)
Zachary (II)
Sisinnius (II)
Conon (II)
Agatho (II)
Donus (II)
Adeodatus (III)
Vitalian (II)
Severinus (II)
Sabinian (II)
Vigilius (II)
Silverius (II)
Felix (V)
Hormisdas (II)
Symmachus (II)
Simplicius (II)
Zosimus (II)
Siricius (II)
Liberius (II)
Marcellinus (II)
Gaius (II)
Eutychian (II)
Dionysius (II)
Cornelis (II)
Fabian (II)
Anterus (II)
Pontian (II)
Zepherinus (II)
Eleuterus (II)
Soter (II)
Anicetus (II)
Hyginus (II)
Telesphorus (II)
Evaristus (II)
**
Of course, we can’t have another Pope Innocent. There have been too many of them, and nobody’s Innocent, these days.
We also don’t need to go to double names, like John Paul. The first John Paul did it as a gesture to his two predecessors, and the second to honor the untimely-dying predecessor. But we don’t need to use those any more. Not when you look at all those pope najmes that have only been used once – 33 of them! Some would be bragging (“Soter” = “Savior”. “Formosus” = “beautiful”), and I wouldn’t suggest them.
But we could have Pope Fabian II! How cool would that be? Or Pope Conon II the Barbarian!
Pope Gaius Zosimus Marcullus!