2nd pic the stuff with the long leaves floating on top is American Pondweed. Very nice to have. I have quite a bit of it in my pond.
It's a rooted plant that provides very good habitat for YOY fish, grass shrimp, insect nymphs, etc. In my pond it doesn't grow in water deeper than 4'.
The slimy, bubbly floating goo is FA. Not so nice. Cutrine+ and a rock rake will help to control that stuff.
Not sure about 1st pic.
