Taishi Zao does some lovely stuff. Some of her original works have been published in the US --
Princess·Princess,
Princess·Princess+, and
Living For Tomorrow, among others. I actually have another of her Koizumi*Kyon doujinshi, but it's not scanned yet. I hope to do it soon, if anyone's interested!
(Although, the typical disclaimer with my scans is that I own mostly R-18 stuff, so it's usually not appropriate to share on this particular board.)