According to it, as you can see, Yukki is shorter than Yuno. Some of the heights prove to be different than what the Wikia has. I'm 99% sure it's official, and I am currently trying to buy it to get a closer look. (This is in cm I assume).
I'm not sure where the site's original heights were retrieved from, though if it were some manga source, they'd be more canon than these settei ones. However, as I cannot source the former, I've added these. For future reference, if you want to tell someone something here, Discussions isn't the best place to do so. I originally saw this on the Discord server and only now saw it here today because of that. Anyway, thanks for the image.