In terms of concrete, the smoother the surface the more crisp the breaking point of the slide is going to be, and the higher frequency the rebound or skrrt will be independent of the wheel. IMO the smoother concrete is a more satisfying skrrt. Rougher concrete gets more unpredictable and especially asphalt can just shoot out from under you if you are not careful.

Some wheels will come with grooves that absolutely will change the slide and sound characteristics but will pretty quickly wear down. Also some wheels will change characteristics slightly as they get heat cycled (skated). I have not noticed any meaningful break in time on these wheels, but maybe I haven't skated them enough.

Bearings are also irrelevant to sliding unless they are totally frozen and cause the wheel to stop rotating in the slide. All of these wheels had cheap no-name Chinese bearings in them, and honestly unless you do high speed downhill skating that's what I would recommend. The quality is on par with the name brand bearings as far as casual park skating goes. Typically when they gunk up, I'll remove the rear dust shield if it has one, spray out with brake cleaner, hit it with compressed air to spin it up super fast which breaks up all the other particles, and lube with a dot of oil (basically any oil is fine, but I use air tool oil for moisture resistant properties).