It is a motif fill...your's is similar except you have not offset the rows...kind of like laying bricks or a basket weave. You may have to create your own motif in your software then save it as a motif.
Thank you! I've been doing it as a the stitch fill. I try it as the motif fill instead and see how that comes out.
Welcome to Cute. I'm not a digitiser, but I'm sure someone will come along soon who can help you out. It reminds me of a checkerboard design. Good luck with your quest. Love Chris, Newcastle, Australia.