There's a wonderful writer of creative non-fiction from Oakland named Carvell Wallace (http://www.carvellwallace.com/). Check out his site and Twitter (https://twitter.com/carvellwallace) to find some of the stories he's written for places like The New York Times Magazine and GQ.
A few online publications you can look into:
California Sunday Magazine (https://www.californiasunday.com/)
The Paris Review (https://www.theparisreview.org/)
Tin House (https://tinhouse.com/)
I also recommend listening to non-fiction writers talk about their process on the Longform Podcast. Here's a great episode with Rachel Kaadzi Ghansah (https://longform.org/posts/longform-podcast-rachel-kaadzi-ghansah-on-a-most-american-terrorist-the-making-of-dylann-roof).
There are also a number of poets who spend part of their time on non-fiction essays. You can read about a few here: https://lithub.com/5-writers-who-blur-the-boundary-between-poetry-and-essay/
My personal favorite writer of creative non-fiction is Wesley Morris. You can find his work here: https://www.nytimes.com/by/wesley-morris
Matt recommends the following next steps:
- Read more
- Keep reading
- ^It'll help you find your voice