Those larger white blobs look exactly like..... white blobs LOL, JK. You'd need to help ID them for us by giving a description of their body shape, appendages, movements, activity, etc as we cant make out any detail on those images.
EditL: I also think your white floss is a type of sponge. If it is growing that fast, more than likely it will consume whatever it is using from the water, and die back. If not, if it is a sponge, you've got nothing to worry about, they are actually very beneficial.
If the white spots are on your glass they're probably spirobids, tiny feather dusters My glass is covered in them in the places I can't get the mag float to, as are my powerheads etc. Good little filter feeders