Which Hook Fires After the Entire WordPress Site Has Finished Loading?

In order for WordPress to load all of its content and functionality, it needs to load all of its files. This can take a while, depending on your WordPress installation and configuration.

WordPress also uses a number of hooks to load additional functionality as it loads.

Most of these hooks fire after the entire WordPress site has finished loading. However, there are a few that fire before that.

The preload_scripts and preload_styles hooks are examples of these.

Overall, the majority of hooks fire after the entire WordPress site has finished loading. This means that the hooks you use to load additional functionality should generally wait until after all of the core WordPress functionality has loaded.