ThePilot

This plugin will create categories for pages only, different from the categories assigned to posts. It will also list these page-only categories on the WordPress Dashboard, so you can sort pages by category on the dashboard.

Create Categories For Pages Only

This plugin will create categories for pages only, different from the categories assigned to posts.

Valentin Agachi

Create Posts & Terms helps with automatically creating a list of new pages, posts & custom post items with dummy content. The items can be nested and can have custom fields & terms assigned upon creation.
It also allows you to create a list of categories, post tags & custom taxonomies terms.

Create Posts & Terms

Create pages, posts, custom post items, categories, post tags & custom taxonomies terms in bulk.

Create Categories For Pages Only vs Create Posts & Terms