Quilted and Curly ("flame") woods are brought out by a combination of natural ripples in the growth rings, combined with sawmill/sawyer technique. When a good sawyer sees potential for figure, he or she will mill the wood appropriately, to yield the highest % of figured boards (more money).
In the sawmill, I have never seen the A-5A "ratings" that guitar manufacturers use. Quilted is Quilted, and the tightest curly figure is called "fiddleback", then "tiger", then just "curly". Soft maple seems to be more prone to curly figure than Western Bigleaf Maple, vice versa for quilt figure.
The way these woods are accentuated on guitars is that the wood is dyed a dark color, then sanded back so that the dye only remains in the "stripes". Then additional colors are applied to create a fire or water 3-D effect. Modulus Graphite and Paul Reed Smith are renowned for their dyed maple finishes.
Modulus Mob #31
Eden Electronics Club #9