These are not real "world currencies".
A real world currency would be a currency that isn't controlled by anyone, not even a world government.
A currency that is decentralised, accessed by anyone over the internet.
The new world currency in my opinion is obviously bitcoin or another cryptocurrency, i can't say which coin will be that for sure as there is increasing competition as well as division inside the bitcoin community
I have nothing against Bitcoin eventually becoming a new world currency
But I disagree that we shouldn't consider major currencies (like those pictured in your post) as global. Otherwise, the whole idea of a global currency loses its meaning and thus the term itself becomes meaningless and irrelevant. More specifically, we should judge something as a global currency not by the place of its issuance (or whether it is centralized or decentralized) but by how widespread it is, i.e. in how many countries it is accepted. And according to this metric, the US dollar cuts it pretty well as a global currency (and Bitcoin too, just for the record)