The upper one showing uniseriate filament with spiral chloroplast is indeed a species of Spirogyra (species identification of Spirogyra requires features of zygospore in addition to the vegetative morphology ).The coenobium could be Pediastrum duplex.
The first two pictures is a Spirogyra sp. and the last picture is a Pediastrum sp. Hopefully you can give us the dimensions of your isolates so that we can identify your specimens up to the species level.