Is there a Grow segment for Orita SMS like there is for Orita Email?

No - SMS subscriber lists are typically much smaller than email lists, and in practice most high-propensity-to-purchase SMS profiles already fall inside the Highly Engaged SMS segment, so a separate Grow segment wouldn't add meaningful incremental audience.

The rest of SMS segmentation mirrors email: profiles are scored and placed into Highly, Moderately, Slightly, Rarely, and Not Engaged SMS cohorts.