The last one looks like either Larkspur or Chinese Delphinium, probably the latter, if I've got the scale right.
The other two are still mysteries to me.

1. no idea though one appears to have a flower spike forming.
2. Lysimachia punctata Alexander [compare the foliage with the one in the other photo that I think may be the same plant but the all green one]
3. Looks like an Aconite possible napellus.

Thank you.

Second one looks like Euonymus fortunii - several varieties Sorry can't tell which but possibly Silver Queen.

could the first be a type of Hemerocallis? not convinced as the way the leaves grow doesn't look right.

Not sure about first. Second Lysimachia. First thought with third was Aconite.

Wow. Never seen a Lysimachia with variegated leaves before.

Its a variety called Alexander and the young growth is flushed pink, very pretty.

These suggestions are all very helpful, thank you.

I can now confirm that the plant in the first picture is prairie spiderwort also known as 'Tradescantia Occidentalis'.