1. Goodness...need clear close up pics.
"a nice bushy plant with little white flowers"
Edited to add...
It might be Achillea ptarmica "The pearl."..pics below.
It has leaves like yours with tiny white double flowers...can become invasive here.
Quote RHS..
"A vigorous perennial forming a spreading clump of finely cut foliage, with dark green leaves and pure white, double flower-heads"
https://www.bethchatto.co.uk/a...
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2.

The pink flower in the center is Liatris spicata...see my pics below
Need clear close ups of anything else.
I tried to work out what the white flowers were, only to realise it was a row of fairy lights Duh!
Achillea

Liatris