Well it's kind of hard to identify at this stage, but the red stemmed one looks like Lady Fern and the one in the lower right looks like New York fern. Post back again when they are more developed.

the two top pics and the bottom right pic look like emerging interrupted ferns to me. You'll know for sure once they get fully open. They will have a section near the middle of the fronds where the leaflets look different. Those are the fertile parts of the fern.