Looks like a Hypericum.

Actually, caryopteris blooms rather late in the season. My caryopteris 'worcester gold' is getting ready to bloom now. I grow 'Snow Fairy' in the shade. In the sun it got too white for my liking. I don't get blooms in the shade, but I don't mind. When I had it in the sun the first year, I didn't think the blooms were much to write home about anyway. It gets bigger than this. This is an older pic. Yes, Carol is a plant id whiz!!! I recognize her name from the NameThatPlant forum.

I don't think the 1st is Campanula persicifolia, but I don't recognize what it is. Agree that bottom is shasta daisy (w/ strawberry plant mixed in). The frilly seedling on bottom right could be nigella.... could also be cosmos, dill... too hard to tell from the photo.

You are lucky to have inherited a garden of some worth and smart to give every thing a year. "Well behaved" could mean anything but with plants it often implies "stays in its place" i.e., not a rampant seeder or spreader. That huge polymorpha is like nothing else....you might consider giving it just one extra year, because it is one cool plant. I have a stand of it and fortunately it is only after winter snows that it lies down. It does have a bad smell when newly in bloom and downwind of it. But I'll give it a pass on that shortcoming....