i have had very strange dreams as well that i believe are related to dissociation. i have had a lot where i am other people, ages, genders, etc. i don't know if other people have those types or not...and i try not to think 'too' much about it..but i find it interesting. i have also dreamed about switching from being in the body to not which is not something i actually do in waking life, but in dreams it has been watching things from a distance at times too.

i have also dreamed about losing people, but for me it is related to people i do know/did know, past or present. i tend to dream every few years about a friend i used to have. i thought i had resolved (in waking life) things with her, but i still find i dream about her..but that also has to do with the connection i had.

i think dreaming about people you don't know still can be linked to similar feelings/events you experienced in real life. your brain does a lot of strange things to process what you have experienced when you dream.