Following are various style guides for Java, JS, Angular, React, CSS in JS etc.

Javascript

• Google
• AirBnB
• StandardJS npm module
• Google typescript formatter - automatic

React

• AirBnB

CSS in JS

• AirBnB

Angular

• Angular official docs and cheat sheet

Code Reviews

• Google

Web fundamentals

• Google web standards and site along with code labs and covid resources and more tools

Java

• Google style guide and intellij plugin
• Oracle java code conventions
• JavaDoc style guide java docs

Google

• All style guides