I'll be honest, these mods do very similar things to KS Combat and I don't want to open a debate to whether or not they are 'taking' from this mod, but for the most part, a big difference between KS and others is that KS is the most vanilla of them. KS doesn't add any new ammo types or anything like that, it only affects how the base game weapons work.
I'm honestly not sure how KS would play with After Dark, if you wanna try it and let me know how it goes, feel free!