First, it's great that you want to upgrade your tank to a more natural look. I remember when I first started, blue gravel and all, and I like my tanks much better now. You've made a great start, but I'm sorry to say, you're LFS wasn't exactly honest with you.
The plant with the varigated leaves (cream and green longish leaves) is a Dracaena sanderiana. Very young cuttings will survive submerged for up to 8 weeks, but it is not an aquatic plant. It actually does best next to a bright window with soil. You also have a plant that looks to me like Japanese rush, another non-aquatic. It could also be either Ophiopogon japonicus.
You have several plants that look like anubias to me and they are planted in the substrate. Anubias grow via a rhizome that can never be submerged or the rhizome will rot and the plant will die. My guess is that the front broad-leafed plant in the front left of the tank is definitely an anubia. My left.
Sorry to be the bringer of bad news, but you are so enthusiastic about making your tank the best that it can be, and I just want to help you.
Many LFSs sell non-aquatic plants as aquatic, and they look tempting, but most die after a few weeks, filling your tank with decayed matter and ammonia. The plants and the tank will be better off if you remove the non-aquatics and plant them in a pot with good soil.
Warmest,
llj
