They did make a modern multicultural doll set, having trouble remembering the name but it was a high school setting with various playsets, skin tones, and I think I remember at least one girl having a different body shape.
I think the problem really is that people really want Mattel to label everything in such specifics, like WE NEED A MODERN GIRL CHARACTER LABELED AS ARGENTINIAN/A PROFESSIONAL/A SPORTY GIRL/MIXED RACE/LESBIAN but for real, one mid-toned doll with dark brown hair could be every single one of those things, its all in who is looking at it.