My favorite LFS had them when we visited yesterday. They called them Tiger and fancy Nerites. I got two of each and just love them.
I have a tank that was allowed to algae on purpose. It has various snails, bristlenose, blue Rams and Endlers in it.
I've seen the one on the right sold as "Tracked" too. I guess it's like tire tracks or something. I have Mystery Snails and I tried giving them algae wafers but they prefer the bloodworms and shrimp pellets and flakes.