I got Joseph M. William's "Style: Toward Clarity and Grace" recommended [1] so you might be interested in it. I read the introduction (I'm planning to read it this year) and with the few examples the author presents it sells the idea that prose doesn't need to be utterly complex to communicate ideas and concepts succinctly and clearly.

[1]: https://news.ycombinator.com/item?id=33601492

My top 3: 1/ Edit ruthlessly. Every single word is reduced to its simplest form and pulls its weight--it has a damn good reason for being there. 2/ Aspire to write at a third-grade reading level. Readers prefer simple writing even when reading deeply technical content. 3/ Start your most important conclusions up front, not at the end. You're not writing The Sixth Sense. Do your reader a favor and tell them the big reveal first. You can then follow through and persuade the reader why your conclusions are right.