Help with Shrimp Identification

[JohnnyMax]

Not sure what it is. I bought some ghost shrimp from a big box pet store. The girl working there said they can be anything including prawns.
Notice the red on the pincers and the dark spots on the body. I don't think it is a ghost shrimp...

If it is a Ghost/Grass shrimp, I need to isolate it and try to breed it and pull out the colors.

[Vorteil]

Looks like this one already has muscular necrosis. It won't live long and needs to be separated from the rest. 

[Shrimpino]

Hi, I started my shrimp tank just a month ago, and I bought two different colors or maybe two different kinds, not sure 🙃 I need someone to guide me, so I can find more specific information on what kind of shrimps I bought. I feel that the information provided by the seller was not sufficient.

Please check the photos and advise.