I wish I shared your confidence! I don't know for sure.
I think the top (fern-like) one is the one that used in Japan for kusamono. That goes red/orange in the winter. I've never been able to find out the name of it, but it might be a variety of Selaginella tamariscina (if anyone knows then I'd be keen to find out).
The second one which you have as a kusamono, I think is Selaginella kraussiana, which is sold by nurseries. Again, if anyone knows better then please tell us.
They are nice plants in any case.