you have 3 kinds of Dracaena, 2 of which are the same species. The green and white striped one is Dracaena deremensis 'Warneckei' and the all green one is D. d. 'Janet Craig Compacta'. The one with the red edges is Dracaena marginata.
The plant with broad green and white leaves is a Dieffenbachia or Dumb Cane.
The trailing one is a Tradescantia or Wandering Jew.