Elementor is an advanced Page Builder plugin comes with a set of default widgets. Although you can add more customizable widgets to Elementor as an Add-on.
For instance, Raven is a custom add-on for Elementor developed by Artbees which represents new useful elements to Elementor.
After you add a new Add-on to Elementor, you may see multiple widgets with the same name in Widgets Panel in Elementor. But they're not the same. These widgets are actually developed by different developers which may represent different customizations and features.
You can check those out and choose most suitable widgets for your need.