I'm not an expert, but I recognize most of your plants. I went to this website:
http://www.guide-to-houseplants.com/...pedia-a-z.html
You'll find them there. I see an arrowhead, polka dot plant, dumbcane, schefflera, and I'm not sure about the last two (but the next to the last looks like a corn plant).
I'm so sorry for the loss of your mother. I lost mine a couple of years ago and so understand how you feel about those plants. Good luck!