their name gives no mnemonic boost whatsoever. Whatever faint associations it might once have held fade away, especially when the discover was neither famous nor narrow, and the reader is several generations removed.
This might be debatable as many of the names in the example are relatively famous names. Any associations they provide might also extend to the dates of the mathematician which also then places the ideas historically as well.
More often I see the problem with some of the bigger greats like Euler and Cauchy who discovered so many things and everything is named after them.
The other problem is mis-attribution of the discovery, which happens all-too-frequently, and the thing is named after the wrong person.