Is there a scheme to finding design patterns inside open-source code?

I need to find design patterns or atleast 5 of them in code of Odoo (https://github.com/odoo/odoo). I am not sure how to find them or how to search the code for them, anybody have any tips or can show me an example of a pattern inside of a code?

Patterns that I look for are:

Wrapping: Adapter, Façade, Decorator, Proxy

Behaviour : Strategy, Command, State

Creation : Factory Method, Abstract Factory, Builder, Prototype, Singleton, Flyweight

Architecture : Layers, Pipes & Filters, Broker, Master Slave, Client Server

Collections : Iterator, Visitor, Composite, Null Object

Communication : Observer, Bridge, Broker, Mediator, Blackboard, Microkernel, Client Dispatcher Server/Lookup, Messaging & Service Orientation: Message, Message Endpoint, Message Translator, Message Router, MVC

Is there an app that looks at the code and can find the patterns or something similar or some kind of scheme to help me?

Thanks!