There are a lot of them. To add to your list here are the color variations I have seen/ heard of
rilis- come in red, blue, green, and clear mixes ex: red/green, blue/green, red/clear, etc
blue velvet (full blue rili- sometime refered to blue jelly)
brown
black
yellow
that last picture is of crystal shrimp and those green shrimp might not be neos
realize if you mix more than one color variation of neos they will become a natural clear-ish brown