The only restriction intended is for fully non-humanoid characters, such as ponies, intelligent four-legged animals, or other characters that couldn't function in a society that's built for two-legged, two-armed people. Your examples would all be acceptable - they have hands and can fit inside the buildings. The aim is, essentially, to ensure that the character can be accommodated in the setting without the mod needing to adjust a large quantity of game mechanics to suit them specifically.
no subject
The only restriction intended is for fully non-humanoid characters, such as ponies, intelligent four-legged animals, or other characters that couldn't function in a society that's built for two-legged, two-armed people. Your examples would all be acceptable - they have hands and can fit inside the buildings. The aim is, essentially, to ensure that the character can be accommodated in the setting without the mod needing to adjust a large quantity of game mechanics to suit them specifically.