I forget who said it, but I remember watching/reading a similar post about this. Basically the answer is build up your name. There are a lot of producers now pitching to the same people, same A&Rs, same artists. So when you are essentially "no one" they take your work, and run with it. Once you have some strong credits under your name, they start respecting the brand and posting your name. For example, Jahlil beats, DJ Mustard. Look at them before they got big. Jahlil was making beats, met up with Meek Mill, and once that really took off, everyone was like "I need a Jahlil beat."
I don't think artists think "how can I help out this producer" in a way outside of financing. Like tweeting your name, or tagging you on a facebook post or snapchatting to their fans who made that record. With all that said, its about how well you are known now.