save_post_wp_global_styles

See hook in action

See this hook used in plugins:

Select Pluginwoocommerce.8.8.3woocommerce.8.9.2woocommerce.8.9.3woocommerce.9.0.2woocommerce.9.1.2woocommerce.9.1.4woocommerce.9.2.2woocommerce.9.2.3woocommerce.9.3.1woocommerce.9.3.3woocommerce.9.4.2woocommerce.9.4.3