I started on this blanket a (very) long while back with some super/ginormous bulky weight yarn, and promptly ran out of the yarn. I finally was able to get some skeins to work on it again, but I have since forgotten what stitch it was!
It might be sc. I can’t tell by looking, I’ve not used that kind of yarn for crochet so don’t know how it looks as it’s worked up. I’d pull out some stitches from the last row to see what they are and then figure out what I had been doing.
My answer is the same. Pull out a few stitches, watching carefully to see if they’re wrapped or not. I also think it’s single crochet, but it MIGHT be hdc. It looks so very different in that yarn!
I am also troubled by the yarn. Specifically why it shows between the parts of the bottom of the stitch.
I am asking if it could be a granite stitch pattern, that is a repeat of (sc, ch space) and on all fol rows work as (SC in the chain spc, ch) across. Always sc in last sc to end row.
Could be granite stitch. The stitches look really odd to me and I was chalking it up to the yarn with which I’ve never crocheted. And never will. I knit with yarn like that…once.