
According to the wiki, the Ninja outfit apparently gives the player silent footsteps, and it says that a few other DLC outfits also give these bonuses. Are the DLC outfits the only ones that give bonuses? What other outfits give bonuses?

According to the wiki, the Ninja outfit apparently gives the player silent footsteps, and it says that a few other DLC outfits also give these bonuses. Are the DLC outfits the only ones that give bonuses? What other outfits give bonuses?
I'm trying to do a no kills run of Watch Dogs 2, however, I'm not sure whether or not the melee (AKA Thunder Ball) could be considered lethal or non-lethal. In my testing, I've found that there's no difference between using a shotgun against someone and using the Thunder Ball, and when I once used it against someone, a civilian called the police saying, "There's been a murder!" which would indicate it is lethal, but I feel like it should be non-lethal and the wiki says it's non-lethal.
Am I missing anything, or is melee lethal?