I understand the sense that the image is trying to convey, but I don’t think it’s particularly fair: the left-hand side are concepts and the right-hand side are implementations.
If the left-hand side was also implementations, it would just be “objects, objects, objects, yep objects again, objects etc”.
If the right-hand side was also concepts, it would have lots of things (some of which have already been mentioned) - monads, pattern-matching, etc.
Some of the right-hand side wouldn’t even be different - for instance, it seems totally reasonable to call this an example of the strategy pattern, where Enum.sort accepts a module that defines a compare/2:
Enum.sort(list_of_datetimes, DateTime)
