Just got this case today, it has decent grip and the top and bottom parts aren't covered which is what I was looking for.

LG V30 Case Nillkin Slim Thin Back Cover Case with Anti Slip Frosted Finish and Screen Flim for LG V30 (Black) https://www.amazon.com/dp/B076V6HFJQ?ref=yo_pop_ma_swf

I bought the bear motion case as well but wasn't a fan of it as the sandstone coating started peeling day 1.