A few of my favorite "diverse" metal songs/groups:
(I mostly like the metal that has a bit of a hip-hop inspiration to it...)
Sevendust - Waffle
YouTube - ‪sevendust waffle‬‏
Sevendust - Black
YouTube - ‪Sevendust - Black‬‏
(One of the greatest Chorus Riffs ever:)
White Zombie - More Human Than Human
YouTube - ‪White Zombie - More Human Than Human‬‏
(I like the sheer craziness behind the concept of this one - being that the lyrics are a twist on regular nursery rhymes - and the overall sound. Makes me bob my head to it. KoRn is also one of my favorite metal bands)
Korn - Shoots and Ladders
YouTube - ‪Korn- Shoots and Ladders‬‏
(It's all about the break in this video: 1:55 - 2:25)
Limp Bizkit - Faith
YouTube - ‪FAITH - LIMP BIZKIT!!!!‬‏
(And then you have speed-metal. Not really a huge fan of it, but here is an example:)
Dragonforce - Through the Fire and Flames
YouTube - ‪Dragonforce - Through The Fire And Flames (Video)‬‏
(And, of course, the harder shit. This song is so hard it falls into the realm of "songs I wouldn't bump in public, but the instrumentation is awesome." Also, listen for how fucking sick the break is at 2:30 - 3:01. I'm honestly not a huge fan of the devil-screaming, though)
Fear Factory - Zero Signal
YouTube - ‪Fear Factory - Demanufacture - 03 - Zero Signal‬‏
(But, going back to what I mostly like, it's gotta have a little bit of melody in it. Disturbed is good stuff.)
Disturbed - Stricken
YouTube - ‪Disturbed - Stricken (Video)‬‏