As others have said #1 is an Amazon sword. Needs lots of light, otherwise tends to turn to mush. Wrecked by plecs. I'd argue it also needs a rich, loamy substrate, but others might argue decent fertilisation of the water or gravel will do.
No idea what #2 is, but given the shape of its leaves and its wood stem, it is almost certainly not a true aquatic but an amphibious plant. Anything that has a stiff stem and holds its leave erect out of water is very unlikely to be a true aquatic. This plant looks like it'll be happy in a bog garden than an aquarium. There are a lot of non-aquatic plants in the trade, and they're often put in "bargain packs" even though they die within weeks, perhaps months of purchase.
#3 looks like a Ludwigia, Rotala or something along those lines. These tend to be difficult to grow, and need a LOT of light. #4 and #5 are Cabomba and "Elodea" respectively. These plants need a lot of light as well, and in tropical aquaria, "Elodea" especially tends become straggly unless given really intense lighting. It must have hard, alkaline water. It's one of the plants that performs biogenic decalcification, and in soft water tanks won't do well, and often messes up the pH dramatically.
#6 is some type of Vallisneria. There are numerous species. All are adaptable and do well across a range of conditions. However, they become big and grow quickly, and need to be aggressively pruned back. While you can break off leaves at the base of the plant, if you do this too often (or too clumsily) the whole plant will rot. It's easier to simply remove adult plants that get too big, and leave the daughter plants to take their place.
As a general comment, "value packs" are usually nothing of the sort. It's always better to choose one or two plants ideally suited to your precise conditions (substrate, lighting, CO2 usage, water chemistry) and then allow those few plants to prosper. Get this right, and you'll soon have lots of daughter plants to fill the tank. For beginners, hardy Crypts, Anubias, Java ferns, and Java moss are the plants to concentrate on, being the least demanding. If you have moderate to bright light, you could add Vallisneria and perhaps Hygrophila polysperma to that mix.
Cheers, Neale
