High-level analysis: gender parity is improving while non-binary writers are still a significantly small proportion of the total; the total percentage of writers of color dropped 3% but is still better than it was in 2015, the first year of this analysis.
I’d also like to note that I’m using Tableau for the analysis this year–you can highlight aspects of the data right on this page or you can download the workbook–with its data–directly. I’m just starting to learn Tableau, so I am sure there are many interesting things that can be done with the tool than what I’ve done. (I also wanted to keep the metrics stable from year to year; at some point I’d love to add in regional data to see what non-U.S. representation is like.)
One other difference from previous years is that I dropped the analysis around repeat appearances on the list. About a third of the POC writers represented had their first appearance in this dataset; however one of this year’s newbies is Chip Delany, so make of that what you will.