Hello JB,
Your plants are all clones of the same plant, so are genetically identical. (Of course there are exceptions to this, but they are rare.) Each plant will look a little different, depending on the individual conditions it has encountered, but they are basically all the same plant--some sort of Sansevieria.
They are clearly very happy with the conditions you're providing, they look great. They should continue to grow and reproduce themselves. It looks like you've removed each offset and given it its own pot. They can also be left to grow as a small clump of several plants in one larger pot, I like the way they look that way too.
I suggest you share and donate your extras, before they totally take over your house!