your last pic looks less like a foxglove seedling and more like a foxglove into its third year and not going to make much of a show
The original pics are foxglove seedlings as others have suggested.
Not Hedge Woundwort
I think this is not a suitable tree for you.
the other one could be E. bourgatii Clarington
No, I use plants suitable for shaded areas, to me it looks more natural which is what I like
You could prune top and bottom and go the bonsai route. I've seen some lovely specimens. Not to my taste though. these are huge trees and can't be grown in pots for long otherwise
never mind the lawn, make a decent sized border
looks like a Japanese anemone
Maybe it was very tiny in the pot with the Stipa.
I think it is an Iris and could be a nice one as Buttercupdays suggests.
Juncus effusis I think, a well known weed of well watered plants in pots. I think it's often from the compost. It turns up all over the place and is often put on here for ID