They sure don't look like lily seedlings
. Number 3 definitely shows a horizontal root (rhizome?) at the base, similar to some beardless irises. You might just have to grow these out a bit before we can figure it out. Or someone who has seen something similar will come and weigh in...
As for picture size, I don't think you need to be concerned about it. Dave has the system programmed to automatically adjust the size. Myself, I usually reduce mine some just to crop out the junk I don't want people to see
.