I have one (as per yours pictured with the big leaves) as well and just researched it as: Maranta leauconeura var. erythroneua; common name =...
I finally happened upon a picture of what I now know is the correct plant: I isn't a Sansiveria after all; it is a Dracaena (currently D....
Thank you both for your guesses (e.g. bromeliad...BN fern...Aspidistra). I too, thought of all three possibilities, but it continues to look SO...
...Stumps me! I'm familiar with most indoor houseplants (even having had horticultural jobs); but I can't seem to come up with a name on this...