Let the trimming begin!
That plant growing all big and ushy, I think is called hygro. Great plant, but grows very, very fast.
The ones on the bottom left are amazon swords? You may have them loose their leaves, but not to worry, its part of adjusting to your tank.
That wrinkled ones I think are Java ferns? Very good growing in low light and can handle a lot of stress, but very slow growing.
As a previous post stated, trim back. Unless you want them growing out the tank and flowering, which I dont recommend, you need light reaching the swords.
I see you have an aqurium sponge as your filter? Is that all? If it is, I suggest you do not add many more fish, your plants will do a fantastic job of filtering, but cannot handle a big bio load. A couple more tetras would be okay to add, like neons, but wat for the tank to establish a bit, it still looks mighty young
Maybe throw in a little corydora, or some type of algae eater, but make sure it gets food at the bottom.
If you have any questions, message me, I'll help with what I can.