Very odd. It lacks the facial markings of a female, but the rest of the fish has a definite female look to it. I'd say give it some time to see if the body colors up, or the face. 4 inches should be sexable, but sometimes color can take a while to develop fully.
Second one barely has a streak on the cheek, which would indicate female, but it has more spangles on the body. However, females can have some spangling, and the abdomen certainly suggests female.
I'd just call them an odd strain of Jacks. The species has been aquarium bred for so long that changes in appearance are almost inevitable.