Filtering editor select/insert gallery

In the editor, the pop-up for selecting/inserting galleries already does the following:

1. Alphabetically orders the galleries.
2. Filters galleries by searching for the gallery name.

It would be useful to have a third option of filtering by category.

You could implement the existing Gallery Category panel.

Here’s what it would roughly look like:

https://imgur.com/a/QhteVa4