So anyway, I was poking around with the subrace options from one of the books and got dissatisfied with them because they didn't seem like they were very thematic or consistent with lore, and long story short, I got carried away and ended up redesigning all 9 of the existing options and adding 18 more. Not that I actually care about the official lore or even knew it before I started, but you know how it is, sometimes you start fiddling around with a thing, and then it grabs you, and before you know it, you've sunk a whole bunch of time and effort into it? Yeah. That happened.
Anyway, I was also poking around on various subreddits for D&D and homebrew content, and it turns out that there are websites that let you lay it out all pretty and official-looking using just a bit of markdown, so then I had to play around with it some more to make it all fancy and nice and share it online, because upvotes.
Which is to say, I made a thing, and I'm pleased with how it turned out: