Clear Fork River Valley and Lakeside Prophecy might fit the bill (though they are probably not locally available). They are both green and corrugated. I do not have either of these so I cannot testify about how well they grow. Both, however, are on my list for next year. I am also not 100% sure about the size of Lakeside Prophecy. Someone suggested it in a previous post.

For stable streakers that just seem to stay streaked... I've grown Kisuji for at least 15 years with no stabilization and no solid sports. Ditto Korean Snow... shiny, streakier in spring, less striking later in season, but great shiny leaves and late yingeri-flowers. I've had Swirls for several years and divided it several times, still no stabilization or solids. Kaleidechrome - two plants since 2009 with no stabilization and really good streaking. Starship - ditto. I keep watching for stabilization, but no sign so far. Ice Age Trail is one of my problem plants - have to take off solid eyes every year. Galaxy - ditto. Same with Savannah Supreme - solids and the stabilized white margin form, Savannah. Sea Prize - lots of solids. (worth the trouble - very fertile, lots of neat streaked seedlings) Blizzard - a few solids but mostly apple green with yellow/cream margins - meaning Winter Snow. I'm going to caution about the use of the word reversion. I never use it (except maybe to curse a little bit that the oldtimers continue to pollute newer hosta people with its imprecision.) First of all, it could only be used if the belief is that part of the crown of a sport is going back to the exact same plant as the parent... June sported from Halcyon, so some believe the blue sport that appears on June is a "reversion" to Halcyon. I would argue that only a dna test would demonstrate that. For all we know, it is a new sport and will be bigger or smaller than Halcyon, or have more wax, or or or... I think there is a lot of variation in the market in what people are calling "Halcyon" because so many of the plants are tc culls from June - and I don't believe they are all identical to June's parent. This has gotten even crazier. Paul's Glory was a variegated sport from Perry's True Blue. I'm sure over the years people have removed solid blue sports from PG and relabeled them as PTB. But the tc process of PG resulted in lots of solid blue plants... but Zilis decided to call those a "sport" and registered it as Wheaton Blue. So why are those a sport, while the blue ones from June are a "reversion"? I should have asked Mark that at the convention. I just might email him about that! Reversion was a term that made a lot more sense in the "old days" when a variegated plant was usually propagated by dividing it off its solid parent - easy enough to see how some crown tissue from the parent could go along with the division... its a lot harder to explain how Halcyon genes make it through a tissue culture process of a June meristem, I think. Galaxy was a cross between a seedling of another streaker, Beatrice, and Frances Williams. It frequently stabilizes to an all green plant. What would it be "reverting" to? It never came from a green plant. But the biggest reason I hate the term is the way it gets used for plants that can't possible be "reverting" to anything. A seedling, for example - can't revert as it never came from another plant. Gunther's Prize is a streaked Sum & Substance... it might stabilize to a margined hosta or a centered hosta or a solid - but unless the solid the the chartreuse yellow of S&S, there is no way to call it a reversion - and, of course, even if it did end up gold, would I know for sure it is just another S&S? I don't think so. So - some streakers are more stable than others, and a home gardener not interested in growing streaked seeds would do well to purchase one of the more stable ones I mentioned at the top... but lets stick to asking about "stabilization" - not "reversions." Thanks!

That is a wide open question, as there are probably several hundred "large blue green hostas" and a vast multitude of hosta gardeners willing to offer their opinions. What exactly are you looking for in your quest for "the best one"? As far as Blue Ivory, I have it and have seen it in other gardens as well.

The one that totally wowed me this year was a hosta that I haven't heard too much about here - Essence of Summer. All green, which usually isn't my favorite, but so elegant with beautiful and extremely fragrant flowers for a month or so in mid summer. This is it's first year. I have a pretty small yard and actually don't want my hostas to grow big too quickly. But this one keep encouraging to grow and multiply - I'd love to have it take over. For a second choice I have to agree with the people recommending OBL. Mine isn't growing quickly, but even with just four leaves it definitely has a presence in the garden. Soothing but interesting, elegant but down to earth. I feel like I need some language similar to what wine experts use to describe.