Can you recommend some inspiring high-quality open-source projects to learn from?

Aspects I am interested in:

• delivery and maintenance of a very complex project,
• design patterns usage in practice,
• SOLID principles in practice,
• versioning,
• security,
• implementation of a customizable white label product,

I am primarily interested in web applications implemented using typescript, react, node.js (including frontend and backend). However, other projects written in any standard language are also welcome.