'Lakeside Cupcake' is a very slow grower. That was last year's picture. This year I finally got a second eye and the leaves got slightly smaller, but it's nowhere near a mini. I'm on the wrong computer to post a picture from this year, but last year I was ready to give up on it.
Glad I'm not the only one who finds 'Lonesome Dove' a slow grower.
Polly, well definitely Kifukurin Ko Mame and Kinbotan. If you allowed for hostas a varying sizes you could add in Fujibotan. There's another of mine that has a definite Japanese name, but I can't think which one. Is Ani Machi a Japanese name? Might be.