Hey Shams! Sorry, can't help out with the mountain green. I'm more obsessed with the leaf varieties and the irregular flowers. However.....
Since you're looking for a beaner, here goes....you ready for this?
Kinkirin - short, horizontal (non curvy) leaves with the shima variegation. very distinct yellow & green bands, beautiful!
Kujyakumaru - short upward pointing rasp leaves. I have a pic of Jason's plant that I can show you guys later.
Jukai - looks just like Sekai, smaller than Unkai with white flowers similar to Unkai.
Seiyukukai - looks exactly like Sekai with the curvy leaves and about the same size but has some shima variegation
I could go on forever with this list so I better stop now. No clue on prices though. FYI Shams, I'm one of the crazies on OB when it comes to Neofinetia so you probably shouldn't listen to me.
