Are there even more possibilities for subheads?
Yes, there are more possibilities. As with all creative work, this is part science, part art; and there are always exceptions.
The benefit & curiosity subheads are the most common and often most compelling subheads. But other possibilities exist, and it depends also on your voice and your audience.
I guess it is a matter of choice. With how you express your (sub-)heads you give away a bit of a feel for the blogstyle.
Yes, this is definitely true. But remember that some readers who don’t know you yet, might be scanning the post before they read the content. And you want to tempt these scanners to start reading.
Good Partners Bring Out the Best in Each Other – (I am in doubt, could be benefit and curiosity)
I agree, it’s a bit of both.
“Own Your Domain” and “Play Live” both arouse some curiosity in me, too. What has Shakespeare to do with owning domains? And how should I, as a writer, play live?
Enchant readers. Woo customers. Win business.