Range pattern birds have “eyebrows”when they’re chicks. If there’s no sign of eye brows, it’ll have a good chance of being feather sexable. Sometimes I’ve seen a male that carries one copy of roux will look more reddish as a chick and as an adult, but I honestly never cared for wild pattern so I...
Does the darker chick have yellow eyebrows at all? That chick will probably fall somewhere between pharoah and Rosetta, but lean towards pharaoh with lots of lacing and pencilling on the feathers, it may or may not be feather sexable.