Caudabe Sheath? A lot of us on this subforum love it. Check out the stickied thread at the top for the XS/XS Max or the other XR owners threads here.
For me, its grippy because its textured all around the case (including the back) and the lip is just high enough (it extends a little higher than my tempered glass). Caudabe has a 25% sale right now if you're interested.
Another cheaper option is the Silk Kung Fu Grip case. Its a little similar to the Caudabe Sheath and reported to have higher lip than the Sheath. But personally, the Silk Grip feels slightly flimsier than the Caudabe Sheath. I have the wallet version of the Silk case for my iphone 8..but I think the grip texture is only on the side of the Silk and not the back.
The Silk case is pretty good still, but I just prefer the Caudabe Sheath much more.