Claymore, Shaman King, Deadman Wonderland and Naruto.
Tokyo Ghoul is seinen right?
Claymore is a shounen but it goes into seinen territory pretty damn often.
Probably because it's not your usual Shonen plot although I'm pretty sure it's considered one.The 2011 Hunter x Hunter anime had most of what I was looking for in that genre. It almost felt catered to me x_x so I'd choose that
Surprised people aren't saying Death Note though, pretty sure that's Shonen at least in demographics