Wait, lack of facial diversity? There's a tall black latina, Japanese-American, a creamy-skinned blonde, our thicc milf with a motherly face, a ginger with a bit of a long face, a round-faced cutie (Melanie), the pasty brat with the highlighted messy bob-ish cut, and another Lara Croft clone who stands at 5'10".
Like, none of these women look exactly the same to me lol. Tho I will say the game favors ponytail as a hairstyle.
As for body type, I somewhat see that. BUT the brat (Amy) is noticeably more slender than the others (and a shortie), Beth is thicc with some plumpness on her lower half which makes her look pear-shaped, Jennifer has the exaggerated anime proportions (as Hazel commented) and stands super tall, Bree is similar but with smaller breasts and better abs than Jen as well as a tad larger body, Mel and Hazel are sisters so they r similar (we get a good comparison in ep5) but I do notice Hazel has more chub on her butt. Miharu has a nice butt but her breasts are average in size.
But overall, they aren't all 100% the same.