If you're referring to the shell texture, there aren't a lot of different types in use right now, a lot of diapers have a similar feel to them. (the type of padding under the shell can also affect feel) Are you lookin for the feel or the appearance? (shell art)
I have found that it is tough to find specific diaper plastics. Even from one batch of the same diaper to the next can vary somewhat. I have some Fabines from the very 1st run that were so disappointing that I had to toss them. The plastic was rough & almost textured, they were nothing like the samples I had tried. Even the old school Abena M4 diapers would vary in the texture, thickness of the plastic etc from one batch to the next.
Tena Slip Maxi Plastic, Breeyo, Crinklz/Betterdry, Absorbency Plus, and Little Builder (excluding velcro panel) are the names that come immediately to mind for having a super soft shell with a soft padding under them. Bambino (and others) have a soft padding, but use the more common semi-textured medium thickness shell. They're still fairly soft, but are a lot harder than the above.