Here are the list of VS Code extensions I’m using for my Ruby on Rails works.
1. Ruby
Syntax highlighting for Ruby

2. Ruby on Rails

3. VSCode Ruby

4. Simple Ruby ERB

5. Endwise

6. ERB Helper Tags
Shortcuts to save you time.

7. Rails DB Schema
Definition and Completion provider for Rails DB Schema.

8. Auto Close Tag

9. Auto Rename Tag

10. Bracket Pair Colorizer 2

11. Code Spell Checker

12. Prettier - Code Formatter

13. Emmet in ERB
It’s not an extension. Just need to do some configurations.

14. DotENV
Syntax highlighting for .env file.

15. Output Colorizer
Very helpful for you to work on log files
