I found the cake design I want but I didn't care for the taste, so I'm going with a different vendor. It was similar to those below but... not exactly. It was buttercream and almost looked like you stuck a finger in the frosting as you were spinning the lazy susan while decorating it. The frosting was sort of fluffy-looking. (Grrr, why can't I describe this properly?! lol)

Close but the lines are too small and too even.

Too pleated. Needs to be more free-form. (Plus, I think this is fondant.)

Closer in regards to messiness (a little too messy) but the lines/layers shouldn't overlap.
I can't find any google results because I don't think I'm searching for the right term. (horizontal lines, ruffles, etc.) TIA!