The game I probably have the most hours in is Overwatch. In that time I've encountered not enough cheaters (at least those that are noticable enough) to say that they are even remotely a problem. I don't know what they are doing, but they don't use a kernel-mode anti-cheat (to my knowledge).
You simply don't notice since overwatch cheats tend to be very advanced. They also have a really strict system around reports and players actually use it.