They are extremely similar. I have both and can't tell them apart. Both are cultivars of Sansevieria aubrytiana. 'Lauren' showing up as a sport of Jaboa while 'Yellow Stone' as a sport of Sayuri. It is also similar to a variegated sport of Sansevieria metallica 'Tenzan' or old name of Sansevieria guineensis variegata. Growing conditions are different between the clones. Sans. aubrytana is most closely similar to growth habits of our common Sans. trifasciata. Stronger and more leaves per node or growing point.