Below are various coding standards for different languages and frameworks

C Sharp

• https://github.com/justinamiller/Coding-Standards

Database

• https://www.sqlstyle.guide/
• https://ovid.github.io/articles/database-design-standards.html

Front End

JavaScript

• Google Standard
• AirBnB
• clean-code-javascript
• https://www.geeksforgeeks.org/javascript-style-guide-and-coding-conventions/
• https://developer.wordpress.org/coding-standards/wordpress-coding-standards/javascript/