Not mine but Scott!2011′s, in case it’s also of wider interest:
I’ve gained most from reading Eliezer, Mencius Moldbug, Aleister Crowley, and G.K. Chesterton (links go to writing samples from each I consider particularly good); I’m currently making my way through Chesterton’s collected works pretty much with the sole aim of imprinting his writing style into my brain.
Stepping from the sublime to the ridiculous, I took a lot from reading Dave Barry when I was a child. He has a very observational sense of humor, the sort where instead of going out looking for jokes, he just writes about a topic and it ends up funny. It’s not hard to copy if you’re familiar enough with it.
Tanner Greer (Scholar’s Stage) and Sam Kriss write really good prose.
Not mine but Scott!2011′s, in case it’s also of wider interest: