Here is my list:
Anacharis
Note: Anacharis (Elodea) (is kind of like hornwort, but I think is prettier. I have some growing in an outdoor patio pond. It has grown a ton, and roots have sprouted everywhere. I use gravel as its substrate. It is fine in the sand, or you can float it. It will root in the sand later on. Very bushy, very green, and my barbs hide in it 24/7. The plant is usually used in sub-tropic to tropic tanks, but it thrives in 45 degrees to 75-degree water outside. There are 6 species of Anacharis.
Hornwort
Note: Hornwort or Coontail (Antocerotophyla) is very hardy. They can survive in practically any water temperature, and any water condition as long as it is in freshwater. Very pretty, and is usually mimicked using plastic. This is a must for planted tanks because they are hearty and bushy. It is different than anacharis. No personal experience; just read about.
Süsswassertang/Süßwassertang
Süsswassertang or Lomarias sp. is a free-floating plant that carpets into the sand. It is slow-growing, but it picks up the pase later. It is great for shrimp tanks, and for breeding tanks. It highly resembles its saltwater companion, seaweed. Thats all the information I know, and giving the situation, this may not be the best plant. To get more information, look at Serpa Design. He uses this plant for paludariums etc. A fun fact is that süßwassertang literally means freshwater seaweed in german.
Marimo
Marimo Moss Balls (Aegagropilia linnaei) are cool little balls of algae. They are very pretty, and almost everything loves them. Very Hardy, pretty, and easy. Thats all there is to it!
Amazon Sword
Amazon Sword (Echinodorus Grisebachii) is a bushy aquatic plant that flowers white. This plant is native to Cuba, and as far down to Brazil and Bolivia. It is a common plant for Discus. Very Pretty, very hearty. I have a root I got from a friend in my 55. It is starting to grow. I believe it is a slow-growing plant. It is cultivated for pond and aquarium life. It doesn't get bushy, but the leaves reach all the way to the top of the tank.
Wendt's Water Trumpet
Wendt's Water Trumpet better known as Cryptocoryne Wendtii is not so popular in the aquatic trade. I know it from Aquarium co-op videos. It gets bushy. No need for Co2, but it does like to feed from roots, so if you don't have good soil, give root tablets. Crypto Wendtii does come in different color morphs (red, tropica, and green), but it does have red veins in the leaves either way. Like Amazon Sword, this plant is known to shrink back and look like it is dieing. It isnt.
You can ask for more information or examples if you need them
