LK Clear Shell Thin
Next, we're recommending another simple but effective TPU case. This one comes from Lightning Knight, a brand that makes precision cut cases that fit like a glove. We've used several LK cases in the past and always enjoy the experience.
This particular case is an ultra thin clear case for the Galaxy S9+, but they offer cases for the regular Galaxy S9 as well. The difference between this and some other clear cases is the "dotted matrix" finish on the inside.
That's basically a textured finish on the inside that adds a buffer between the device and the case for added durability. It also prevents discoloration to the clear shell. This is another good minimal clear case.