The term 'receiver' has a long and distinguished history. Alan Kay used it, Smalltalk used the word almost exclusively. If Zoomers don't know their computer science history that's on them.

> Alan Kay used it, Smalltalk used

So Alan and the language he helped create. That’s double counting the sample of 1

“Marshaling” became pretty ubiquitous as a term in the 1990s with CORBA and Microsoft OLE/COM.