Thank you for the report, we'll get it on our list of things to get sorted.
Yeah, the wiki is pretty out of date, but we've got someone helping out on it right now that's doing some amazing work. They've added a staggering amount of content to it over the last week or so.
For the under the table content, there's a scene each for Misaki and Mitsuko, but other than that you're right that most of the content is currently focused on Anna and Eve. I figure the next time I end up working on that content, I'll be starting with creating a baseline of content for the female MC with current characters, then see about adding Misaki. Around that time, we'll see if any of the other characters' authors are interested in contributing anything too. Eventually I think it would be fun to let the MC both give and receive.