Stop Changing "Wordpress" to "WordPress"
Disables the filter that silently rewrites the spelling of WordPress in titles, content and comments, which can break URLs or quoted text.
Snippet Library
Disable Features snippets for WordPress
Snippets that switch off WordPress features you do not use: comments, the block editor, RSS feeds, automatic updates, attachment pages and more. One snippet per feature, so you turn off exactly what you want and nothing else.
Stop Converting Text Smileys to Images
Leaves text like :) and ;-) as typed instead of replacing it with smiley images or emoji.
Turn Off the Visual Tab in the Classic Editor
Makes the classic editor open in Text (HTML) mode only, for sites where the visual editor keeps changing hand-written markup.