It has been claimed that the main concern of the Kyoto School is not religion or comparative studies per se, but the search for truth, which however often draws upon insights from religion. Perhaps that's not much of a distinction. But it seems to me that at least some writings by members of the Kyoto School don't have anything to do with religion.

https://plato.stanford.edu/entries/kyoto-school/

https://plato.stanford.edu/entries/kyoto-school/notes.html