We know that Saint Peter was a Jew before becoming a Christian. However, the backgrounds of most of the early popes is a bit convoluted and hazy so their religious backgrounds are not known with certainty.
The first Pope Peter was a Jew.
John Paul II is also a possible Jew as his lineage points through his mother.
There is an unconfirmed story of a Jewish pope: http://en.wikipedia.org/wiki/Jewish_pope_Andreas
Some were against Jews (Which isn't good). Popes are supposed to be model Catholics and so they are expected to love everyone from Jew to Protestant to Buddhists. Some popes were in very close ties and friendships with the Jewish people; St. Peter, the first pope was a Jew. We had a very holy pope recently (Pope John Paul II) who had many Jewish friends. In his childhood he would voluntarily go on the Jewish soccer team (There was a Jewish and Catholic team at his school) if they were short any people. When he was pope, he visited Jewish leaders many times (He also visited the Dalai Lama eight times and kissed the Koran). He was a model pope who might be canonized a saint some day.
196 popes have come from Italy.
217 popes have been born in Italy.
There have been no popes named Kenneth.
There have been no popes named Jude.
I am sure there are many popes in Heaven but am equally sure that there are a number of popes burning in hell.
There were 38 popes before Anastasius I.
There have been 8 popes called Urban.
There have been 6 popes named Sixtus.
There have been 13 popes named Leo.
The question does not really make sense. The only non-Jews in the Holocaust were those doing the persecuting. It is like asking how many Popes survived the Inquisition.
Roman Catholic Popes are descended from Peter, how can they be false? Please be more clear in your question and what you are referring to.