This is one of those cases where there are two hostas with the same name. One is registered and, therefore, the "official" version of H. 'All Aflutter' while the other is a non-registered plant and needs to be renamed to avoid further confusion.

Registered by Don Dean of Minnesota in 2019, this rhizomatous, this cultivar is a seedling of an open-pollinated seedling of H. 'Northern Heritage' × H. laevigata. It is a medium size hosta about 13 inches high by 37 inches wide with medium blue-green foliage with a yellow marginal variegation.

The broadly ovate leaves are moderately rippled at the margins, slightly folded, moderately wavy and deeply twisted overall. Medium lavender flowers with a narrow pale lavender stripe bloom from July into August on scapes 15 to 21 inches tall. It sets seeds but their viability was not know at the time of registration.

The registration materials state: "...Wavy, twisted leaves of heavy substance with feathered variegation. Performs well in sun or shade...yellow margins turn white and center becomes more green."

Hosta Helper will call this plant 'All Aflutter' (Don Dean)

There is an image of this cultivar on the Hosta Library. From the photo, it appears to be a large size hosta with narrow, pointed, dark green leaves and creamy yellow streaked variegation. It bears lavender flowers. This non-registered cultivar was originated by Bev and Dave Stegeman of Indiana. 

Hosta Helper will call this plant 'All Aflutter' (Stegeman)