Yes, if you were to pull apart all of the soil and repot, I think it would fit in the 10-12" pot. It might not look as nice as keeping them separate though.
The snake plants we offer can have anywhere from 2-5 bibs in the pot.
I recommend using succulent potting soil.
I would recommend repotting into a 10in pot so your snake plant has new soil to grown into.
Snake Plants like well draining soils, similar to soils succulents thrive in. Getting succulent soil should work.