I'm kinda the opposite of you, I actively look for girls with "shallow" and tight pussies. Yes a lot of them show signs of apprehension when they see my size, thankfully so far none have flatly refused, and I always managed to assure them I'll take care of them. The reason I go for these types of girls is I really enjoy the feeling of hitting their cervix and the reaction I get from them when this happens. It's not exactly pain reaction... More like surprise, discomfort and then a sort of pleading me not to go too deep, hands pushing me back and all. This is all after getting them worked up so it's all mixed with sounds of gasping and moaning. It really turns me on.
Anyway, I figure you can apply my "method" in the opposite way to get the opposite outcome. For me, I look for skinny, petite girls with longer leg to body ratios. They would usually be described as "leggy" and "petite". This has almost always resulted in me getting what I wanted: tight, shallow pussy that I can hit and feel the cervix when I go deep.
So, I guess for your requirement, you should just look for girls that have longer torsos.
Unfortunately, there's not much descriptions of girls that will say "long torso", lol! I think you can go by height and dress size then... Maybe size 8s and taller girls (170+ cm)?