By historical definition, Kantha is a regional style of textile and stitch.
Kantha (meaning: “patched cloth”) refers to both the tradition of producing unique, quilted blankets (making something useful and beautiful out of discarded items). As well as the craft and stitch itself (a small, straight running stitch in Bengali embroidery).
Kantha is a style of stitching found in Indian embroidery.
I chose these pictures because they have both aspects of Kantha.
In any case, if we speak of Kantha Stitch, is always simply a running stitched, used as a quilting stitch (functional) or an embroidery stitch (decorative)
So Kantha Stitch it could be called but for me, in my work, it is about the running stitch and the natural resulting ripple and so I might just call it a running stitch or walking stitch in it's slowest version. I see it everywhere in a layered textile. We might call it a Kantha Style stitch if we have been inspired by that which has become a reference. It is not the ripple that makes it a Kantha stitch, it is the nature of a running stitch that creates a ripple. And you can manage it to make it more apparent.
From Whispering White, talking about the tension between cloth and stitch...
From Small Journeys, talking about the direction of the ripple and how that might become a design element.
You will find this page filed under Kantha in the Glossary