A custom post listing in WordPress is a powerful way to display content from a custom post type (CPT) such as portfolios, products, testimonials, or case studies. Designed for flexibility and performance, custom post listings allow developers and content creators to control exactly how specific types of content are queried and rendered across the site. Modern custom post listing implementations often include built-in support for multiple layout styles to improve user experience and design aesthetics. Three of the most commonly supported layouts are: Grid Layout , Masonry Layout , Metro Layout These layouts are typically powered by JavaScript libraries such as Isotope or Masonry.js, and can be enhanced with filtering, sorting, pagination, and load-more options (AJAX or infinite scroll).