You can edit the implant descriptors to not show those/only show certain ones, even.
Not sure if you're saying none of these makes your Steele's butt any bigger or that the description doesn't change. If going goo doesn't bother you, you can goo yourself up with Galomax and change hip/butt size on the fly (you can un-goo after and still maintain the ability). Estrobloom can up the size of your hips and butt, but it's also got other effects and can reduce the size of dick + balls if that's an issue. If you do Kiroquest (or use the cheat menu) there's the Buttslutinator. Just be sure to only use it twice max if you don't want the bad end.