Hi there!
Ironically Stonington Gray HC-170 and Barren Plain 2111-60 are quite different. Stonington Gray is much cooler with bluer undertone while Barren Plain is warmer with redder undertone. Our suggestion would be Balboa Mist OC-27, Collingwood OC-28 and Gray Owl OC-52 but not sure if that’s buried under those piles of chips. We would also suggest looking at the grays in isolation. The undertone appears stronger when it’s paired with another gray/neutral side by side. This is a great way to identify the DNA of a color, but can also be distracting when trying to envision a space with a single color. And as always, your lighting will deeply influence the end result. Select a few (less than 5), test it out with bigger swatches- perhaps by using Benjamin Moore pint samples and view one at a time to see how it looks. Hope this helps!
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Benjamin Moore Gray
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