In the wands universe, it seems (so far) that the magic revolves around the concept of spirits and something quantifiable as "spirit." I don't fully understand it, yet, but semantically it is unlikely that working with radiant spirit is the same thing as being spiritual. If I know me, I'll certainly twist the word to encompass it anyway, to make the readers think about the topic. I'm writing /Inklings/ with Wintereyes as a prequel to another story I wrote for her where she encounters a god, but I found that story incomplete. Still... capital S Spiritual? I don't think so.
The devil-girl in the reluctance universe is a natural-born Buddhist in how she approaches life. She isn't spiritual, however. She just... /is/.
None of the current WiPs include the concept.
That said, I have written such characters in other novels. The /Walking Trees/ MC was that, on steroids. Many of the SCs in the balance universe were spiritual. Just nothing currently.
