Hey Tim. I'll do what I can to help you out here...
This is some sort of Aechmea. Almost looks like a better grown version of the last one you have pictured. Looks as if it was grown in low light.
These all look like Aechmea blanchetiana that have not gotten very much light. If they ARE A. blanchetiana then they can be acclimated to full sun and are a BRIGHT orangeish-yellow. Gorgeous!
This one is difficult. There are a few different species in a few different genera that look like this. Aechmea fasciata var. purpurea, Billbergia brasiliensis and even Hohenbergia correia-araujoi that looks like this. Since I can't see a bloom, I would say its an Aechmea fasciata var. purpurea based on overall shape and color/banding.
This is a Neoregelia hybrid of some sort. Its been kept in lower lighting as you can tell by the not so vibrant coloration. There are a few hybrids that look like this and it would be hard to distinguish unless you already knew the name. Just grow it in bright filtered sun and it should color back up for you.
These are also some sort of Neoregelia hybrid. Without a name it will be almost impossible to really know. Grow it like a Neo and it should do well.
I'm not really sure what this is either. It looks like some sort of Aechmea or Billbergia that was grown in low light and too much moisture. Just plant it where you plant the Neos and it should do fine.
Hope that helps.