Displaying only book-level contributors

Theming
1

I would like to display the list of all the contributors in a dedicated Back Matter as described at Create and Display Contributors – Pressbooks User Guide . But the two editors are also contributors (authors of a book chapter). As a consequence, their name and bio appear twice in the list: once as Authors (at the top), once as Contributors with the others.

Is there any way to prevent this? Thanks.

2

I found a way to hide the unwanted duplicate names by adding the following code:

.back-matter h2.contributor__type:first-of-type {
    display: none;
}

.back-matter div.contributor:first-of-type {
    display: none;
}

.back-matter div.contributor:nth-of-type(2) {
    display: none;
}

Not sure though that this is the cleanest way to do this…