Back in late 2012 (it blows my mind that it was ten years ago) I started the effort of making sure I had brewed at least one beer in every category of the BJCP Style Guidelines.
See SheppyBrew Styles. You can also follow the progress on Sheppy's Blog: BJCP Goal
I made it through all the categories, and shortly after I did, the BJCP made a fairly major update, which meant there were new categories to hit.
See 2015 Style Guidelines.
I know I knocked out most of the categories, but I'm not 100% sure I hit them all. I think I did, but I may have missed one or two. (EDIT ... after going through the list, I see now that there are 3 that I missed. I'm going to have to work on fixing that)
Regardless, we now have another new version of the guidelines. BJCP 2021 Style Guidelines. The 2021 version isn't as much as a total overhaul that 2015 was, so I think I've probably hit as many of the categories as I had before.
But, I thought I'd take some time to take inventory on BJCP Styles that I have and have not brewed ...