Arriving plants

Java moss and anubias can thrive in really low light. My anubias is practically in the dark and putting out 2 leaves a month.
My crypts and amazon sword are doing really well in 2 watts per gallon (they were in less, they grew but weren't as healthy as they are now).
Depends what you mean by low light I guess.

Java moss and anubias should be fine.

Depending on the type of crypt, it should be able to adapt to the lower light. Most of them can take low light, a very few require medium to high. With the crypt you might get a big melt off before it grows back as it adapts to the new conditions (the shipping can cause that as well). They tend to grow really red rather than green in low light tanks as well.

I've seen amazon swords in low light set-ups, but I'd say those were in 2 to 2.5 wpg at least. I have a red melon sword doing great in 2 wpg. If you get it in the tank and cannot get it to grow, lighting could be the reason.