One universal truth for us is that we have never use the same set of techniques twice. Sure we reuse select practices, but they we always being tweaked, amd something else is always getting mixed in. Experience ranges from RUP, to all mainstream flavours of agile, to Kanban amd Lean, with us just beginning to play with Lean Startup methods.
With that in mind I came up with the following illustration, loosely based on the original GOF patterns diagram at the beginning of the book. All the diagram may seem overwhelming, the beauty of it is that you can start anywhere you want, and likewise stop, depending on your context.