“All over but the shouting.” No pattern written yet. I could also call this the 10-rib hat, I guess. I’m open to suggestions for the name, I think Penta-swirl is not so great.

In the diagram, the brackets show edges that are joined using the sliding loop technique by Ric Mondragon, and the dot shows an edge that is picked up from another edge of the previous knitting.

Good explanation of the sliding-loop technique (with pictures) is here.