“Ethel Street Peach” looks a delightful rose Billy. The beauty of it for me is the yellow base. How many petals did you count? Some of the photos look more than semi-double. Do you think you should add “occasional white streak” to the description? How does it age? Does it fade, change or retain its colour.

I don’t think it could be Apricot Queen 1940. The foundling’s petals are not wavy enough and Apricot Queen does not have that strong yellow base.
Nor might it be Lady Pirrie - no yellow base.
You would know Mrs A.R. Waddell.
Rochfort seems to have too many petals.
Maman Cochet Cochet shows stamens.
After peering at your photos, my best bet would be Katharine Pechtold <1933.