What other colors do you have in the room? How much light does the room get?

would you like the grays to have violet undertones. green undertones, or would you like the greys to more of a greige?

I would suggest that you look at warm neutrals on Sherwin Williams website to see if you like any of them.

also, if you find a grey that you like, take a picture of it with decent lighting.
the use Sherwin Williams color snap app to interpret the color to match one of their paints.

Benjamin Moore has a similar app.

you might post some images so that people can can make more informed comments. your furnish will also influence the grays that you select.