Hi, and a warm welcome to Tropical Fish Keeping forum.
as you are a planted tank enthusiast.
Previous responses are on the mark. But I think the problems you describe are simply due to the new tank more than anything else. Swords (Echinodorus species) often lose existing leaves when acquired; this results from how the plant may have been raised (usually emersed as opposed to submersed) and/or a change in water parameters from the store to your tank. The presence of new green growth from the centre of the crown like I see in the plant on the right in the second photo indicates this plant is fine, generally speaking. Expect some or all of the outer leaves to yellow and die; if they begin to yellow, and provided there are enough new leaves, remove them. Yellowing sword leaves never recover.
The plant on the left in the first photo is also a sword, though I can't say what "species." It is a cultivar variety, the white spotting pattern is induced by a virus. I've come across these several times but at the moment the details escape me. Anyway, they grow the same as regular sword species.
The Vallisneria may not do well long-term. You mention it doesn't look as good as it was. Vallisneria prefer hard water, and while they may "grow" in soft water they usually do not do that well. I have soft acidic water here, and have a group of Vallisneria spiralis in one of my tanks, and I've had it for about 2 months now and while it is growing and sending out new leaves (also from the centre of the crown like the swords) it is definitely not as robust as I have had it previously in hard water tanks. Keep an eye on it; if it does not really perk up after a couple months, you might want to consider replacing it with a similar plant that will be fine in your water, Sagittaria. This latter genus of plants is native to the Americas along with Echinodorus and in places they occur naturally together, so they will do well in soft slightly acidic water.
Your water is perfect for soft acidic water fish. Lucky us. And that suits the fish you mention, though in a 10g they are way overcrowded. I would very seriously consider separating the Bolivian Ram out soon. The common ram is also pushing it in a 10g though not quite as seriously. These fish will cause severe stress to each other in such a confined space. I have a pair of regularly-spawning Bolivians in my 115g Amazon riverscape, and they are bossy in that large a space especially when spawning; I can't imagine them in even a 20g. We have fish profiles here, as someone mentioned, the second tab from the left in the blue bar at the top, or you can see a fish's profile by clicking on the shaded name in posts.