New Post: ListCell class template location

Also, look at the productlistfeatured.template as an example of a secondary template with its own wrapper classes.

There's a section in the stylesheet.css with styles for that template. Look there for:
/* Featured Items Product List - To enable this, apply the productlistfeatured.template to a secondary product list */

If you copy and modify those items, you can create a third style.
Regards
Rob