metabox

Template list metabox is to create Metabox for Dropdown List of all available Templates to attach with any Custom Post Types

Add a multi-image metabox to your posts, pages and custom post types

Pure Metafields is very light weight plugin tused to create custom metabox for any post type like page, post and your custom post type support it.

Replace the checkboxes with radio buttons or a select drop-down in the built-in Categories metabox and Gutenberg sidebar panel.