Oh! This is so great that you are doing this! It's a big project though. I hope other people can help you fill it out. I'd love to get clips of my favorite companions saying some of the interesting things they say while walking about the world.
Here's a few that I remember. I might not be so good on exact locations, but hopefully every little bit helps.
So...can you tell I traveled with Vector a lot? And I pay attention when he speaks...it's that voice
I wish I could remember more. I'd love to have a list. I'll come back with more if I find any.