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I like marsh marigolds for those conditions, but they only bloom in spring and are a lovely green the rest of the year. Are you looking just to cover the area, or do you need something that blooms later in the year?

Here is an article or two that you may find helpful: https://www.gardeningknowhow.com/ornamental/shrubs/shgen/shade-loving-shrubs.htm
https://www.gardeningknowhow.com/special/shade/evergreens-for-shade.htm

I live on the coast of Louisiana and since the last 2 hurricanes (rita & ike) I have found that "monkey grass" came back very quickly. I am not sure of the scientific name of it but you can google monkey grass. Hope this helps!

I was gonna suggest a ficus too, you could always get a variegated one, which offers more color and variation, ficus can be braided too to add extra interest. Only thing about the ficus is that if they like a place, they don't really care about being moved around alot, they will drop leaves. They do come back but they will drop them. You can also look into philadendrons, they can get pretty big and they offer many more varieties than ficus. They do well inside and surely they are more plants, but I can't think of them right now. Some tropicals also do well in some low light areas. Also look into whether you will have it by a window or not as far as lighting goes. Hope this helps.

This area would likely make a great rain garden. Here is more info on rain gardens and some moisture-loving plants that can be used: https://www.gardeningknowhow.com/special/spaces/rain-garden-design.htm

You might want to look at lantana. Sweet peas would not work as they do not like acidic soil.