The top one looks like a narrow leaf sword, but it's difficult to tell without something to compare it to for size. It could also be a large var. of Sag. Either way, they need no special care and will grow well at 1.5 watts and up.
#2 is an Amazon Sword which is easy to care for and in the same light area as the above.
#3 is indeed corkscrew val. and also relatively easy for some and almost impossible for a few of us. I grow it well under 2.0 wpg and dose extra Mg for it. My Plecos play heck with it though. Even the little Bristlenose make it look stringy at times.
#4 is Anubia and good down to 1.0 wpg. A very easy and tough plant.
#5 is a Micro Sword and more light needy than the others. What makes it more difficult to grow is the fact that it is very low growing and thus sits a good distance from the light fixtures. I would not invest heavily in it unless you have 2.5 - 3.0wpg at least. More will be required in a deeper tank, for good results.
#5 and 6 I'll leave to someone else to identify. I have little knowledge of salt water plants and #5 could be any of 5 or 6 different plants.
Len