What does devourer proc?

So sated devourer procs double on hit effects every other attack. Does it trigger only things that explicitly say on hit, or does it trigger things that also say "next attack"? Mostly I'm curious about it's interaction w/ jax, itself, and tri force.

SD says in its passive basic attacks do bonus magic damage, so does that double every other hit, sheen increases the next auto after a spell and so does jax w, and his ult gives bonus damage but doesn't say on hit. I'm curious what procs and what doesn't because from a balance perspective it makes sense that not everything would, because jungle jax could prime the ult and double so going to lane he could w for auto damage+double SD+double tri force+double w bonus+double ult bonus, which would be stupid huge burst. At the same time, his ult only would proc every 6 attacks with SD (odd number and even number take a bit to match up), and it would kinda feel hollow if SD doesn't interact w/ his passive ult proc.