Exclude Categories From the Categories Widget
Hides chosen categories from the classic Categories widget list or dropdown.
Snippet Library
Widgets snippets for WordPress
Snippets for widgets and sidebars: restore the classic widget screen, register new widget areas, remove default widgets and allow shortcodes in text widgets. For classic themes and sites that still lean on sidebars.
Exclude a Category From the Recent Posts Widget
Keeps posts from the categories you choose out of the classic Recent Posts widget, for example sponsored posts or internal news.
Pages Widget: Exclude Pages and Sort by Menu Order
Hides pages such as Privacy Policy or Thank You from the Pages widget and sorts the rest by their menu order.