I got all 3 from different sources (The first one originally came from the Botanical Gardens in Thailand apparently), the second came from a friend by the name of Josiah Hartzell and the last I am not sure, so they could all be different
I think the best thing to do is to wait till they flower and then repost them.
Tim, yeah, you are right. The first two have a thin white margin kinda like striata and the last has minute teeth.