I think the pink one is Astrantia maxima
Does it smell like celeriac?
I think Ladybird is right Salix caprea. If not caprea, Salix something else, but willow definitely
close, striatum. Could be a good choice, will cope with sun or shade.
To my eye that paeony is too 'trussed up'. They're big blousey plants and need to expand a bit.
Anything with no leaf or bud development by midsummer is dead I fear
or anything too sun loving that will get shaded out
sun, well drained if there's a choice, all together in a clump.
I think I'd take everything out and start again