Bradley, here are the publications that have great art-related content:

- Art Direct - https://medium.com/art-direct

- ART + Marketing - https://artplusmarketing.com/ (Still on Medium, but with a custom domain)

Also, make sure to follow these authors who also write insightful pieces about contemporary art. Hope the list is helpful.

- JiaJia Fei - https://medium.com/@vajiajia

- Simon de la Rouviere - https://medium.com/@simondlr

- Claudia Romano - https://immerse.news/@claudia.romano777