As of right now, the following CAVE SH3 titles have preliminary (still no sound and hardware slowdown not emulated properly) drivers in MAME:
Ibara Kuro (Black Label)
Muchi Muchi Pork (apparently, I haven’t seen the rom files yet)
Mushihimesama Futari 1.0
Mushihimesama Futari 1.54
Also added (I haven’t checked this out personally) is the Blue version of Guwange!!! I also believe that Pink Sweets has been dumped, but as I write this, I don’t know if it’s emulated yet. Pretty cool stuff.
Updated with a few title screens (don’t mind the fake scanlines, I added them):