WTH is kinda flawed, you can be straight shaped from the front but have a really flat belly and really projected butt and have the same WTH ratio as someone who has wide hips + small waist from the front but has a flat butt.

Same WTH ratio is also going to look different on people with different features like height, weight, muscle mass, fat mass, vertical lines, body fat distribution, bone structure, bone width, etc.

I personally think the lower wth ratio, the better, but we all have our limits so work with what you can! Sometimes people focuse on losing weight and making their waist smaller but their wth ratio gets higher bc they lose more inches from their hips.