It looks like White Butterfly Ginger, if so, it blooms in late summer with white fragrant blossoms.
Have lots of em, it used to bloom in September, then sooner every year, now starts around middle of June, in zone 9. Proof that earth is getting warmer and I've been getting older for a long time, lol
It returns from the roots if cut down or frozen, not sure in colder places where it might be best to bring it indoors near a bright window or in greenhouse. I've been cutting whole tops with stems , leaves and flowers, 1 of them alone in a vase adds fragrance and beauty indoors.
Again, I might be wrong, good luck.

Bea

any other suggestions?

Does look like a Ginger of some sort. Might be an edible type.

It might be one of the ornamental gingers but I'll guess Zingiber officinale, GINGER (the edible root).

Joe