That is a most lovely arrangement, and definitely ripe for separation when you feel like it.
Tiffany has given you some excellent advice. I would only add a few technical notes.
If you do separate any plants, be sure to choose a pot with holes at the bottom, ideally wider than tall, and not too much wider than the plant you're separating. Use soil with excellent drainage (like bagged cactus mix or regular potting soil with 25-50% perlite or pumice mixed in). And most importantly, wait a week after potting up the plants to water them. They need some time for the roots to heal before they are submerged in dirty water, so that they don't rot.
Just about all the plants in that container have the potential to fill it on their own, given time. If they continue together, the stronger ones will win out and the weaker ones will stop growing. Not a big deal but something to watch for. Continue to provide strong light, just like you are doing, for the best health and form of your plants.