The small mushrooms may be species of Panaeolus of Psilocybe. i would need to see a spore print and examine them with a microscope to give you a definite species identification. Sometimes deadly poisonous species of Galerina also look like these. The large mushroom is a species of Lepiota. Again, a look at the stalk and a spore print would be necessary to give a species identification. The poisonous Lepiota molybdites has a pale greenish yellow colored spore print.