For some reason the great mystic of the Middle Ages Rav Avraham Abulfia is not well known and that seems like a tragedy to me. After all he was highly regarded by Rav Chaim Vital and the Remak רב משה  קורדבירו both. In fact that last gate of the Musar book of Rav Chaim Vital, vol.  4 [שערי קדושה] consists almost entirely of the system of Rav Avraham Abulfia,  and does not even mention the Ari. Plus the Remak quotes the books of Abulafia often in his Pardes [but just the titles of the books and does not mention the author.]

He did have an opinion about Jesus that is not well known. He held he was the messiah son of Joseph mentioned at the end of tractate Suka.  [The subject of messiah son of Joseph is dealt with also in the Kol HaTor of the Gra and the Ramchal. [That is the Tikunim Chadashim of the Ramchal].