Pipewire? It's very new to me and can't say I know much about it, not that I knew much about its predecessors either.

The pipes in the diagram are obviously named pipes, but they're not Linux pipes. There seems to be not only multiple types (which is disturbingly Microsoft), but often multiple by the same name (which would confuse most sane OSes, if not the insane ones too.)

It's almost like they're instances of a subroutine object all running in parallel...