TLDR: Block templates in WordPress standardize post structures, reducing errors and speeding up content creation. They differ from block patterns as they auto-load specific layouts, enable customization, and can be locked to maintain consistency. Custom templates can be created using ACF®, catering to various content types. Best practices include locking critical blocks, using placeholders, defining attributes, and reusing template parts for efficiency. Overall, they enhance control and adaptability for web developers.
https://www.advancedcustomfields.com/blog/wordpress-block-templates/