Identifying a Houseplant? (Money Tree)
That is a money tree. I have several. They love filtered light, and let the soil dry out before you water. They do shed leaves, but grow a lovely tree indoors.
What is This Houseplant?
This one is referred to by several names... a Zamioculcas, Zanzibar Gem, or ZZ Plant. I recently got one so Im learning as I go, but love mine thus far.
What is This Plant? (Dracaena Fragrans)
Yes, corn plant. Corn plants like filtered light (indoors). They are creatures of habit, so I suggest leaving it in the same spot. I have two, and mine have shown signs of trauma when moved. I let the soil dry between waterings.