judaism does not work by democracy.
The Saadya Gaon, a great sephardi rabbi, rejected reincarnation. He died 942CE. That is over a thousand years closer to sinai than rav mizrachi, or tzvi.
Kabbalism has become very popular throughout the jewish world.. Almost everybody accepts the zohar..
Most ashkenazim accept it, and most sephardim.
I have heard of sephardi scholars that reject it. eg those that follow the RAMBAM very strictly. I have not heard of that many ashkenazim that reject it..
I do not see any evidence of it being accepted throughout the sephardi world but not the ashkenazi world.
The Arizal - a HUGE ashkenazi rabbi, is accepted by almost everybody. So is sephardi, but french educated, RAMBAN.
Again though
judaism does not work by democracy.
And this widesspread kabbalism, was probably not the case prior to the RAMBAM. It may have started a bit after, like, RAMBAN time.
So, keep an open mind. Open to both possibilities.