Wow, you lucked out! Send them a photo. They might be able to give you a name.
I am actually waiting for their reply already, ahahah! For now, my best bet is that this plant was a leftover from a previously available semialba striata lot that got mixed with tipos while not flowering and lost its tag (they do have semialba striatas available on their US website, apparently), but once they reply, I'll let you know.