Who is he referring to in Tobey?

To me it’s such a mystery, how people I’ve already ripped can be, higher up on a list than me.

He’s got to be talking about the billboard top 50 rappers, which places him behind 2Pac, Nas, Kendrick and Jay-Z.

He’s already said he considers that he eats rappers even when he collaborates with them on Killer (Remix). He had collabed with everyone but 2Pac on that list.

Do we think he is directly saying he should be higher than Jay-Z, Nas and Kendrick? Or am I missing something, does he mean someone more specific?