Thanks to the efforts of others in the 9.1 thread
here, the following have been confirmed tameable in the upcoming patch, assuming nothing changes:
- Acidmaw Scorpid (Has missing assets)
- Amber Parasite
- Crystalline Scorpid (both versions, has missing assets)
- Dreadfang Slitherer
- Dreadfang Slitherer
- Kovok
- Mist Hound
- Ohgan (Uses a new model not shown on petopia!)
- Rageface
- Raigonn (full form, broken form unavailable)
- Riplimb
- Shalebiter (retains its name for some reason)
- Skorpyron (Has missing assets)
- Venomous Spiderling (version found by the first trash pack in the room)
- Volatile Scorpid (Has missing assets)

I've left obvious clues in my screenshots involving unintended things, and nobody has noticed them.
Which ones? Well, you'll have to find out for yourself! Or just catch me slacking ingame 