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.
Nobody wants very much of the FA, but the other two are welcome in most ponds. If it gets beyond your desires, it can be killed back (mechanical removal or herbicides), but it's uncommon for anyone to want or need to eradicate them from the BOW. I am trying to esatblish both in my young pond.