I've not actually used this but I adapted it's code to enforce a configuration setting (I wanted to remove the HTML dom elements that are shown in the status bar).
The module allows you to supply your configuration using the UI.
Lets you insert any entity type (supposedly) via the WYSIWYG editor, and like images you can set alignment etc. It creates a toolbar button that can be added to the toolbar configuration in 'Text formats and editors'. The strings needed can be pretty long - e.g.
<drupal-entity data-embed-button="snippet" data-entity-embed-display="entity_reference:entity_reference_entity_id" data-entity-type="snippet" data-entity-uuid="216914ab-1bc2-4a73-975b-dc1de79e849a"></drupal-entity>
Adds options should as choice of target, title, class ID etc. to the link dialog in CKEditor.
Needs configuring after install.