Here's my Stingray as of yesterday. Seems like as the leaves get bigger, they develop that wrinkled, cupped look. When it was little it had pretty little stingray-shaped leaves.
It could be a variegated Stingray, but I think Evan may be right, it sure could also be the Xantho.
Here's my Blue Hawaii making really vivid purple stems and veins so the leaves are much prettier now than they were in the warm weather.