But other than the label, there are no other items in the gangster rappers set

According to this diagram, what I said is mathematically true. The diagram doesn't need to fit entirely within the other, it doesn't contain secret hidden elements.

Ignoring of course, that a set can't contain duplicates. If we throw out the duplicates, then Santa and Gangster Rappers are just a type of pirate, at least in terms of their vocabulary.

Or you know, just don't take it so seriously because it's a meme and I made a joke...