brown drip pottery, retro vintage stoneware plates in two sizes, set for 8

Vintage brown drip pattern pottery plates - eight each of 6 3/4" diameter and 10 1/2" diameter, all in nice shape showing very little use. These are marked only USA, not marked with a maker, so we're not sure who made these? Harker, Pfaltzgraff, McCoy, Hull Oven Proof, Mt. Clemens, Kathy Kale?