Hokay, I read most of what you had to say... and boy, you got it wrong.
I honestly don't know where to start, lets start with the 4 elements of hip-hop.
These are, DJ'ing (Disk Jockey) MC'ing (Microphone Commander) Dancing and Graffiti.
They DO NOT include, bitches, fighting and etc.
Most of the rappers you named are 'whack em cees' they have no true hip hop in them, and by the real hip-hoppers they are classed as sub-genres of
hip-hop and 90% of what people think is Hip-hop is actually R&B.
Lets start with DJ's
This is Mix Master Mike, DMC World Champion, he has taken the Delta Blues - Robert Johnson and the underlying track which is the instrumental from
Dead Prez - Hip Hop. Yes he has stolen records, BUT the point of this is that it shows how he has advanced the tune from the original. People hear a
song they know is familiar which is 'cut' to create different variations on the same tune, this is where we progress to 'Beat Juggling'
This is roc raids, one of the best at the sport, he almost always uses 2 decks with the same song on each deck, he cuts them and creates completely
different time signatures.
Now talking about free beats. DJ premier is a perfect example, he create albums of beats, he allows anyone to use those beats to create rap songs, its
first come first serve and if you choose the same beat as someone better than you, then your schooled.
Now time for Madlib and J Dilla, two of the most talented musicians there are, and not only are they massively respected in the Hip-hop world they are
also parsed by classical, jazz, blues, and so on. Madlib was actually asked to remix and album for Blue Note Recordings, and he did it perfectly, with
amazing respect for 60-80 year old songs. The two of them also nearly hit every genre of the culture examples below.
This is Jaylib, J villa and Madlib teamed up:
This is Quasimoto, a character of Madlib:
This is Madlib:
Madlib for blue Note.
This is Madlibs super remix:
Thats to start, I shall post MC's and Graffiti next.
But heres a flavour: