No 3 is most likely in the Cavendish family.
No 4 could possibly be a Zebrina.

The others are hard to tell.

4 could also be a Bordelon but with that much red splotching on the top, it's probably a Zebrina like Jon says. If it grows much taller than 5-6' or so before blooming, consider the chance that it's a Bordelon.

I don't know what number 1 is. I have number 2 but I don't know what it is, and the number 3 looks like a dwarf cavendish. I know exactly what number 4 is it is a rowe red because it looks exactly like the one I have, the rowe red gets to about 5-7 feet.