Sure, I considered calling it "Herringbone". But, when I think of a herringbone pattern, I picture a little larger angle, shorter legs, and a fairly defined pattern. I opted for the more descriptive "Flame".
Sorry Ken, I wasn't trying to name it, just using a descriptive term that could lead to why it shows the way it does. In your picture, I couldn't make out a center weld. If so, it may be a two rod bar with opposite twist, or it may be a single rod. Either way, I was just guessing as to what happened at the mill to create the pattern.
I also think Doc Drew's first picture of the rib was kind of neat. I see three rods. I think I see the pattern of each rod sort of pinned to the weld lines then a bit more draw towards the center of the rods, the twist area. Interesting pictures guys.