No way that is a Black Star or a Brown Leghorn.Clean legs! And not fully all one color. Varying shades of buff/yellow. Here’s some different angles on her. I just really think there’s no way she’s an OE, EE, black star or brown leghorn right?
But Ideal does not list any particular color for their Easter Eggers and does show a photo with several colors. The Olive Egger page says they are produced from crossing an Easter Egger with Barnevelder or Welsummer. If you can use any color Easter Egger, you can produce almost any color of chick from that cross.
So based on what is on their own site, I cannot look at any color of chick and be certain it is no Easter Egger or Olive Egger.
The chick does appear to have a pea comb, which is a very common trait in Easter Eggers and Olive Eggers (including the ones pictured on Ideal's site).
I think they just sent you an extra of either Easter Egger or Olive Egger, and it's a color you weren't expecting.
The color of that chick is what happens when you take a brown-and-black chick (like some of your other stripey ones) and turn the black into white. That is genetically simple (the gene called "Dominant White" is found in a number of breeds and mixes, and turns black into white. It's why Golden Stars have white tails while Production Reds have black tails: the Golden Stars have the black turned into white.)
I am pretty sure your "yellow" chick is not a New Hampshire Red or a Production Red, because the color is wrong. If those breeds of chicks have any stripes, some of the stripes are dark (black or dark brown), not just the light ones.I thought, New Hampshire red, golden star or production red. We those some you thought of too?
Based on the new photos with the comb, I am pretty sure it has a pea comb. All the ones you just listed have single combs.
I think it is an extra of either Easter Egger or Olive Egger.