@jeremy_pm
Historically there were many Christian and some non-religous Palestinians, but that's less true today.
According to Wikipedia, the percentage of the global Palestinian population that is Christian was 6.5% about 30 years ago. At present, of Palestinians living in the Holy Land, it's only 1 to 2% who are Christian.
https://en.m.wikipedia.org/wiki/Palestinian_Christians
There are other religious and ethnic groups with long-standing presence in the area of course. I once worked with a fellow who was Druze.