I bought these seeds as Sinningia leucotricha, but I'm not sure if that's what they really are.
That's the biggest of them, the green part of the plant being about an inch tall. They're about eight months old.
The seedling does look like a Sinningia, but I'm not positive it is S. leucotricha as I haven't grown this particular species from seed. Sinningia leucotricha leaves tend to be grey-ish in color, have smooth edges, and there's generally a long stem holding the crown up above the tuber. I don't see any of those features here, but maybe it's a factor of age.