With thanks to TheHenry who went thru various Knot Books, it would seem that the Grant’s Looper (aka/ K-Tel Knitter) base row is the same as The Chain Sinnet
can be seen in the Ashley Book of Knots, The Chain Sinnet #2868, on page 472
The Looper/Knitter is being used not unlike a fid is used in ply split braiding.
Others have suggested it is not unlike NalBinding, and I think I would have to agree
So many names, all for the same techniques, no wonder I am “fused”