Lol my apologies for the rudeness, don't feel the weight of my words in english, it's not my mother tonge
But guys, Jesus was jewish, here why:
Jews were waiting for the messi and the messi came (Jesus) but the jews refused to believe in Him because like you said He broke some jewish rules and wanted to modify some of the jewish beliefs (or whatever it is, you get my point) but He was jewish and came for the jews.
Even on the cross, he was still jewish, some jews believed in him after thet because they saw that He was really the messi, so all his live He was jewish but the jews didn't believe in him, then the people who believe in him separate themselves from the jews and formed a new religion, christianity.
It's my version but I think all the Churches agree on it, ask to your priests, mine told me that it was right, so I really think he was jewish and christianity didn't exist at his time