These guys occassionally appear on Aquabid
The second one is yellow nose red bee, I have seen some people call it fireball shrimp. The third is gold flake/yellow cheek. Both of them are caridina spinata.There is a few people that have them from time to time on here.
The first is Cardinal, the second may be orange delight, i'm not sure and the third is red goldflake.
They require a high pH/gH/kH yet low TDS, very clean warm water to keep them. Most that you order will come from the wild and you will loose many with wild bought ones. The best is to get tank bred ones instead, but they are usually more expensive, mostly because someone has went through the trouble of ordering 200 wild caught ones, had 175 die and started a population from the 25 that made it.