I'm also leaning towards some kind of Iris or (less likely) day lily. Ginger tends to have a central stalk on new growth, whereas these look to be flatter leaves. The bilateral symmetry of the growth has me unsure, though. For comparison, here is some new growth on one of our irises (Iris sibirica):
Here is an image of young daylilies (Hemerocallis lilioasphodelus (not real lilies)) for comparison as well - there are a number of cultivar varieties, and some with variegated leaves, which is possibly the case with your plant
There are so many monocots (huge taxonomic group) that all look roughly the same in this stage. Maybe just let it grow a bit and see how the leaves turn out and especially how the inflorescences might look.