Answer: popes

AnswerCrossword Clue
POPES

John, Paul, and John Paul

POPES

St. Peter and his successors

POPES

Urban and Innocent

POPES
Vatican VIPs
POPES
Innocent and Urban
POPESJohn and Paul
POPESVatican leaders
POPESJohn, Paul and John Paul
POPESSwiss Guard charges
POPESVaticanologists study them
POPESLinus and thirteen Leos
POPESThey're chosen during conclaves
POPESJohn Paul and predecessors
POPESPius and Leo
POPESLeo II and Pius V
POPES12 named Pius
POPESBishops of Rome
POPESFabian and Hilarius
POPESPeter and succcessors
POPESThe 12 Piuses
POPESAlmanac listing
POPESAlmanac-page listing
POPESWhom cardinals choose
POPESCollege of Cardinals selections
POPESVatican rulers
POPESPeter and successors
POPESPeter and Paul, but not Mary
POPESThey often have Roman numerals in their names
POPES13 of them were Innocent
POPESThey're elected in conclaves
POPESZephyrinus and Zosimus, e.g.
POPESBishops of Rome.
POPESPeter, Linus, Anacletus, etc.
POPESUrban and Innocent.
POPESClement, Leo, etc.
POPESAlexander and others.
POPESPontiffs.
POPESAlexander and others
POPESGregory et al.
POPESLeo and Paul