I have had an anubias and java fern with nothing but a small LED light for months, and they (even the java fern) have grown a lot
My java fern has the little "seed" things on it, but none have sprouted.
I got another "hard to kill" plant, wisteria, that melted down over two months and there is nothing left. I read that people grew them in "dark rooms" and they were fine.. so I don't know what I did there.
My hornwort is doing okayish.. I have 3 bunches.. one is great, one is okay, one is not so swell. I also planted a little sprig and it seems to be growing. The not so swell one still has a green stem so I have hope