The plant in the lower photo, right side is a rhyzone plant, probably some sort of a java fern. Rhyzone plants do much better when attached to driftwood or a rock. Planting in the substrate not a good idea. As for the other plant, I couldn't see a rhyzone, but since it also was attached it probably is one. It might be an anubius, there are so many varieties. These types are usually low light plants and are easy to care for.
Many fellow AA members are quite knowlegable in this area, I'm sure you will get a positive I'D. Good luck.