Some sites will call something crochet when it's very obviously knit, and vice versa. Though this could well be a crochet rib, it looks a lot like a brioche/fisherman's rib.
I think you could easily mimic this crochet with the brioche stitch. I do this by casting on a multiple of three. The pattern is sl1 knitwise, yarn over, knit two together to the end of the row. It's the same pattern for right and wrong sides. You won't begin to see the pattern for about seven rows. Nice dish clothes. They puff up when wet. Great for shower wash cloths. They feel nice on the skin and would be great for gifts.