Wow.
What's that grass like plant in the base? Sagittaria Subulata?
No, but a very similar one, the pygmy chain sword, Helanthium tenellum or more likely it is the slightly larger chain sword, H. bolivianum. I have had these two species in my tanks since I bought the original plants in 1995/6. They like my moderate lighting so I stay with them. I have tried Sagittaria subulata once or twice but it didn't survive long.
Is that Frogbit at the top too?
No. There are a couple strands of Pennywort floating, but all the rest is Water Lettuce.