Beautiful aquarium in the photos, well done. I like the substrate, good choice for colour. And those plants will fill in and that will be a jungle when they do, but you can also thin/prune/divide later.
Potted plants, whatever they may be, should be removed from the pots and carefully remove the planting medium (wool stuff). I say carefully because the roots have probably grown through it, but I find that it generally will come apart and slide off the roots if you do it slowly. Just so happens I was planting out new potted crypts yesterday in my 70g re-do. Mine were like yours, thick; and I left a couple but separated a couple others. Once you get the wool off, carefully use your fingers to gently spread the roots at the crown, and you will probably find 3 or more significant plants (and possibly a few daughter plants sprouting). Plant them separately.
If it were me, from your photo I would consider dividing the C. parva into three, planting two of them where it now is only spaced maybe 2-3 inches apart, and the third at the right end of that wood just about where that white ball is (can't tell what that is, seems to have a tiny plant attached, maybe a Java Fern
?). Crypts always appear more "natural" when in groups and together or in the same general area, such as around a chunk of wood.
Hope this helps. I do like that aquascape.