At first blush, the flowering spike of this one seems thicker, more densely flowered, perhaps one of the double-spiraled species. But, I don't think so. In most respects this species is very similar to the Spiranthes lacera in the first three photos. I think it is the so-called Northern Slender Lady's-tresses, Spiranthes lacera var. gracilis, which at times has been considered a distinct species.
Halleluja, brother - who cares what its name is! An orchid such as this is always a pot at the end of the rainbow, no matter what you call it!