Uber Design Pattern with RIB structure

From the list of below design patterns, which design patterns are currently being used by Uber App? Why would have Uber opted to use that design pattern? What advantages does that design pattern provided to both Uber drivers and customers?

1. Singleton
2. Observer
3. Composite
4. Strategy
5. Adapter
6. Facade
7. Template Method
8. Iterator
9. Decorator