Here is a developer resource – A searchable directory of WordPress filter and action hooks created by Tiffany Brown.

A minimalist plaintext WordPress theme. This one looks like a Classic theme. I imagine you can do something similar with block themes.

Plugin developers – Are you working on the settings page for your plugin, or planning a refresh? Anh Tran took a look at the admin screens of a number of plugins and shared his favorite designs.

For plugin developers – Ronald Huereca has a straightforward tutorial about namespaces and using them in your plugin.

For plugin developers – Plugins hosted on WordPress org have an assets folder for icons, the banner, screenshots, etc. Here is a guide for using the assets folder.

Developer focused – Tom McFarlin has another article related to using anonymous functions in WordPress. He has also created a plugin to get information about registered hooks and callbacks on a site.

For developers – This article gives and overview of the REST API and show how to create your own custom end-points.

For plugin authors – here is an in-depth and practical guide from Matt Cromwell on how to optimize your plugin’s readme file.

Here is a process overview article on the Delicious Brains blog about creating custom block using React and using ACF. It does not go into depth but links to resources for various steps.