I just realized that bruisers arent a class and cant be balanced as if they are.
Yes bruiser builds work but no champion is by definition a bruiser! Darius is a juggernaut, Riven is currently an assassin(lethality riven folks), Kled is a fighter (built like a bruiser), Elise is a assassin, Yorick is a juggernaut, Aatrox is a fighter, Nasus is a tank/ juggernaut, Fiora is a fighter, Udyr is a tank, Renekton is an assassin or tank(havent seen an actual bruiser built renekton in forever), Pantheon is an assassin, Vi assassin possibly tank never bruiser, Jarvan is assassin or tank never built inbetween (or from what Ive seen), Olaf is a juggernaut, I would say their is around 5 actual bruisers that are also built like it Xin Zhao, Garen, Skarner, Jax.......Sometimes shyvana but shes a jungler Udyr is also considered a bruiser but I really only seen either attack speed udyrs or full tank. Lee sin can also be considered a true bruiser, but is built with a lot of damage or straight tank now a days so not really.
who have mobility, deal high sustained damage with abilities and autos weaved together, and situational defense.