Identification

My brother moved out in March and left a car here that doesn't work. It's parked alongside the sidewalk and a nice little wetland has developed around the tires. I've just been ignoring it, but this morning I identified several wetland plants including what I think is cat-tails. Anyway, a thick-stemmed grass that was happily colonizing our localized swamp. There were several others. I think someone up the street must have had an overflow of their water feature and we got the leftovers.

I found two plants there that I've never seen before. I know someone will mention a plant identifier app, but my "camera" is a work cell phone so I can't load personal stuff on it. I do not have a personal cell phone.

Both are grasses, and I assume that at least one of them is an escaped ornamental. The first seems to range about six inches tall and has tufts of seeds. On this one I primarily want to know if I need to be concerned about it as an invasive.

The second, though, looks like some sorghum relative and I'm wondering if it might be good for food. The branches are segmented like bamboo, the leaves clasp the stem and the seed heads look like sorghum but clasp the core like corn.

Any ideas?