Geranium species. Maybe G carolinianum, although I've never seen that one myself.

You may want to stake them, Michelle. They tend to get blown over in storms and if that happens sometimes the main stem will break and you will lose much of the plant, and, of course, the flowers. Your pictures are very good. They look healthy. I'm sure the butterflies are enjoying them.

As in Phlox subulata. Creeping Phlox is also known as Phlox stolonifera which is a totally different shade tolerant ground cover.

Sagittaria graminea, Grassy arrowhead. See here: https://en.wikipedia.org/wiki/Sagittaria_graminea