This is 7A NJ, japanese honeysuckle and scentless mock orange are flowering in the same area.

it looks like some false brome to me

Brachypodium

in Europe B dystachon is a nativ grass in woodlands

sometimes the leaves have "eyelashes" along the edges

Thanks for taking a look at this, I'll take more pics this weekend, maybe pull one up.

Japanese stiltweed?

There is Japanese stiltgrass around, here it is on the left, the unknown grass is on the right

Bump for flowers

Sorry theyre kind of out of focus.

It is similar to Cinna arundinacea, in form, but the photos don't show enough detail for a confident ID.

Any better? That pot on the right is a trade gallon

For comparison here is Cinna arundinacea I planted from seed last year. I sowed the seed (from prairiemoon nursery) in a plug tray and then planted it last fall. This was the only one I planted and it didnt get near this size last year or make an appreciable flower.