I think Python's pattern using inheritance for mixins is probably a good candidate. But Python does have a culture of "inheritance is only for sharing code user beware if you try to use it for other things." Python's ABC classes for collections is also a good use of inheritance. Inherit from MutableMapping, implement the required methods, boom you get all the other mapping methods for free.

Pydantic / dataclass inheritance is elegant for building up different collections of fields. That being said it does use codegen / metaclass hackery to do it.