Cathedral glass is also called 'Figured'. Originally it was rough plate glass, like that used for greenhouses, or early railway stations, but with improvements to the technology to make rolled plate glass, this process was adopted from about 1850.
Double-rolled is where the glass is passed through two sets of rollers, to allow more complex textures (such as opposing patterns) to be impressed onto the malleable glass. This was patented by W E Chance (different company to Chance Bros.) in 1885.
However, I don't think Sue's samples are deliberately textured. More likely these are plain rolled glass, where clarity was not a high priority, and the surface is entirely dependant on the smoothness (or not!) of the rollers. Modern 'stained' glass can often be tinted rolled glass, and the additional use of textures can prove some stunning results. Did Max ever post a photo of her dining room window?