Rules for Danbooru, FurAffinity, and InkBunny
Danbooru, FurAffinity, and InkBunny are all sites which may be embarassing if a third party (WiFi MitM-er, etc.) manages to log which specific pages you're visiting.
(FurAffinity and InkBunny are sort of like deviantArt but for adult furry content while Danbooru is a collaborative, moderated image gallery dedicated to Japanese-themed content... mostly adult.)
All three offer HTTPS access and I have been unable to trigger any mixed content warnings. (In fact, InkBunny provides their own HTTPS-E ruleset and instructions to install it.)
I don't know what the auditing process is, but I've written rulesets for the first two and I'd like to propose all three for inclusion. (I haven't pounded on my own for days, but every page and page transition I thought to try worked without problems and they're simple enough that they could probably have been generated by the make-trivial-rule script had I know about it at the time.)
The InkBunny ruleset is available at https://inkbunny.net/contrib/inkbunny_https.xml
I'm attaching my own two.