Jelinda,
Great having you back. Those Sans look like the ones Sansevieria Trifasciata Futura type, Black Futura 'Goldedge' also known as 'Midnight Shine'. They could be different ones but look exactly like it. I would not cut them up. Leave the pups (as their called) on the mother plant. The pups will grow larger than the mother if left on. I would plant all up into the same pot leaving room for the pups to expand out. I plan to put mine up in a small window box. I have 3 different pots full.
Note that the pups here have overgrown the mother in the middle.
