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. 'Yankee Doodle' while the other is a non-registered plant and needs to be renamed to avoid further confusion.
 

Registered by Randy Goodwin of Indiana in 2018, this slow growing cultivar is a medium size (15 inches high by 36 inches wide) sport of H. 'Yankee Doodle Dandy'. It has olive green foliage with a yellow marginal variegation. The leaves are broadly ovate, slightly cupped, slightly twisted, folded, dull on the bottom and slightly shiny on top. Pale lavender flowers on scapes 25 to 30 inches tall bloom from late June into July followed by viable seeds.

The registration materials state: "...distinctive green color accented by thin yellow margins on a strongly veined leaf surface...faint striping on center of petals..."

Hosta Helper will call this plant 'Yankee Doodle' (Goodwin)

There is an image of this cultivar on the Hosta Library. From the photo on the HL website, it appears to be a small size hosta with green leaves and creamy white marginal variegation. This non-registered cultivar was originated by Alex Malloy of New York. 

According to The Hostapedia by Mark Zilis (2009), "...leaves white-margined with a green and yellow-streaked center..."

Hosta Helper will call this plant 'Yankee Doodle' (Malloy)