So he is a Chasidic Rebbe who, as it turns out, disgrees with the Baal Shem Tov. He might be a Rav and comes from a Chassidic dynasty, and might have retained some of the style — perhaps with a new flavor — but one thing he isn’t is a Rebbe.
Now, to argue on the Arizal on an Inyan in Kabbala is foolish and arrogant. Does this person really know the intricate details of what a Neshama is, from where it originates, the many different types of Gilgulim and their purpose? This is like preferring speculation over a first hand report.
But for interest sake, from the later Rishonim who openly speak of Gilgul we only find it about a person. But the Gemara in Bava Kama does seem to allude to another kind, in the topic of changing after seven years.