>> rows of grids.
Yup! Or "Long Skinny Rectangle Foot Gardening".
I never thought of long rows, but in blocks so narrow that you don't NEED "row spacing". That might combine the best of "French Intensive/raised beds" and row cropping.
I forget - are your rows "hilled up" at all? If they are, I think we could also call it "Long Skinny French Intensive".