Someone needs to list how many Bishops of Jerusalem there are.
You really want to know?
There are 10 (an 11th is questionably extant) canonical jurisdictions among the Catholic, Eastern and Oriental Orthodox, and Assyrian Churches, but only 7 of the 10 sees are of episcopal rank (the questionable one is also of episcopal rank, if it is extant):
... 4 Oriental Orthodox, 1 Eastern Orthodox, 1 Assyrian (ACOE, questionable), 1 Latin Catholic, 2 Oriental Catholic (both patriarchal exarchates, neither headed by a bishop), 1 Maronite Catholic (a patriarchal exarchate, not headed by a bishop), and 1 Eastern Catholic
Ancient Church of the East: Jerusalem Archbishopric of the Holy Land & Mount Of Olives
(not sure if this is extant, it doesn't appear in the current list of the ACOE's Holy Snynod)
Armenian Apostolic: Patriarchate of St James in Jerusalem
Armenian Catholic: Patriarchal Exarchate of Amman & Jerusalem
Coptic Orthodox: Metropolitan Archbishopic of the Holy and Great City of Our Lord, Jerusalem, Holy Zion, All Palestine, Philadelphia of Jordan, & All the Near East
Ethiopian Orthodox Tewahado: Archbishopric of Jerusalem
Greek Orthodox: Patriarchate of Jerusalem
Latin: Patriarchate of Jerusalem of the Latins
Maronite: Patriarchal Exarchate of Jerusalem & Palestine
Melkite: Patriarchal Archdiocese of Jerusalem of the Melkites
Syriac Catholic: Patriarchal Exarchate of Jerusalem & Amman
Syriac Orthodox: Metropolitan Patriarchal-Vicariate of Jerusalem & Jordan
Several other Churches (MP/ROC and Romanian OC come to mind) have a formal presence, but the ranking prelate is an archimandrite and these are not, as far as I know, formally titled jurisdictions.