Suggest you lay all the darks out in a row, all the mediums in a row, and all the lights in a row. Take a picture of them straight on (IOW don't lay them on a table and attempt to photo them while standing - the further row will not show up. Put them on the floor and stand on a chair if necessary).
It's important to get them all in the same photograph as opposed to photographing the darks separate from the lights, because value is relative to what is next to. A dark may be a light if it is with only darker fabrics. You need to see the whole picture as a whole.
Then take the photograph and convert it to black and white.
That will help you spot instantly the value of each and any that don't belong in the group.
Color viewers also work to bleed out color and reduce it to value only (value meaning light vs dark), however ... you can't use a red viewer to view reds or browns, and you can't use a blue viewer to view blues greens or greys. Since you have all of the above, reducing to black and white is your best option.