This is one
of those cases where there are two hostas with the
same name. Neither is registered with
The American Hosta Society. The first one to be registered would
become the "official" hosta of that name and the
other would have to be renamed.
Mikiko Lockwood in an article on The Hosta Library titled,
A Little About Japanese Hosta Terms defines the term kinakafu or ki nakifu as yellow-center(ed).
These two cultivars were listed on the
MyHostas Database website.