Indent Paragraph with Tab

This plugin lets you increase or decrease paragraph indentation by pressing Tab or Shift+Tab in the Gutenberg editor.
From version 1.1.0, indentation inside the editor is represented by a simple <tab> × N badge — ensuring clean, theme-independent preview — while the actual indentation remains visible on the front end.

FAQ Check on the site.
https://it-libero.com/en/en-us/download/indent-paragraph-with-tab/

Settings

You can change the indentation value.
1. Admin Settings > Indent Tab
2. Indent Step input