There's really no standard and frequency analyzing, while somewhat enlightening (sometimes) is pretty much a waste of your time. And besides, you can't just say "A hip-hop track." Young Jeezy will have a different spectral balance from Kendrick Lamar.
I wouldn't look at it that way. Just look at it from what you hear. If you feel like the track sounds slightly off, maybe it's not a bad thing, maybe it is. Personally, this new to pimp a butterfly album had some songs that sounded REALLY off to me but I like them. Hood Politics is one.