It seems like these are different than the ones in the website. These are not really "unexpected" in the way that "PageRank", which is an algorithm for ranking pages, turns out not to be names after the pages it ranks, but the Page that invented it.
The examples in your post are just the source of these names, which may be unknown to many, but are not unexpected.
The examples in your post are just the source of these names, which may be unknown to many, but are not unexpected.