It is interesting. Yours look much more like Grammatophyllums. Doesn't mean they aren't what they say they are though. Will be fun to see how they bloom out.
It is very possible to have that much difference in an intergeneric hybrid... one parent or the other can dominate. Sometimes even from the same seed capsule. Just will have to wait!
Coconuts, it looks like a lot of your plants are in full sun. I wish I could keep mine outside all year. If I could I'd be spending all my money on plants!