It’s not just about handle material, but shape and finish on the material as well.
My griptilian with FRN handle ride in my pocket for 4 years, and is no where as grippy as it was when new. The checkering has worn down and all the edges have rounded over. I replaced the scales in December with a set of titanium scales with texture machined into them. Those will last considerably longer.
My Bark River Aurora has smooth micarta scales and I honestly find it to slippery. It’d be a perfect knife with a front guard or a deep single finger groove. I rarely use it for much as I see it not really a safe design. Just me.
My Randall has smooth micarta, but has a single finger groove and double guard. I have no concerns about control with the knife for any tasks. However, minus the groove and guard, I would rehandle it. Smooth Micarta is to slick and looks like ass when it is roughed for grip. By far my least favorite material.
My cold steel Recon Tanto has the Pachmayer Zyrtec grips. I’ve had it since 2004 and it has been to Iraq twice and Afghanistan once. It’s is still as grippy as it was when new.
My favorite knife for food chores has a highly polished desert ironwood handle. It is still very grippy even when wet. It is well contoured which is important.
Elephant ivory is very grippy, even when polished to a high grit. Just the nature of the material, and it is a favorite of mine. Warm, grippy, and has proven durable
On my user knife I handled with it, my two IPSC guns, my cowboy action guns, and my edc gun.
So it’s not just the material, the contours and texture matter as well. Checkering is an art in itself and can add a lot of traction to woods and other materials. The reason I shy away from checkering is it will drown out the grain and burl.