I don't the have the exact dates but I have rough idea of it. I have been playing since launch March 20th but I didn't have anyone move until end of April. I will list them in the order of I got them.
*=moved away
*Muffy - One of my starters and the 2nd islander to move out. I enjoyed muffy but I was okay in letting her go.
Ribbot- My other starter. At first I didn't like them but they are growing me on.
Dizzy - My first mystery islander and my one of my favorite villagers <3 I love elephants
Flora - My second mystery islander, I enjoy her, The first gift from her to me was a Mr. Flamingo lol
Rhonda - My third mystery islander, I like her but I am not as attached as I thought I would be. Mostly invited her to my island because she moved out of my NL town without me knowing until afterward. So yea that would round out my first 5 islanders.
*
Lucha- The forced camper, I learned to appreciate him but was fine with letting him go, making him the 3rd move out. He seems more like jock then a smug
*
Eugene- I got tired of island hopping so settled on him. I don't have any strong feels for or against him. He was my first official move out but not the first to ask to move xD(I wasn't ready to let go the others yet)
Eloise - I normally try to have all different kind of species but i haven't come across many snooty, I can make exception for elephants
Hugh - I think he is an adorable piggy
Murphy- He is also adorable, He would be my 10th islander and him being cranky the last personality I needed(I tend to like to have all personalities)
Nan- add to the adorable list, moved into Eugene's spot
Bianca - While island hopping I thought she seemed cool, moved into Muffy's spot. The start of not having all the personalities
Reneigh - The first of the new villagers I have encountered and first campsite camper that I Invited. I almost didn't have her move in because she didn't seem like she wanted too but I got curious what name she would choose. She said Lucha, I was cool with that. So yea the forced Camper was asked to leave by a camper. Also Bianca and Reneigh are only moving in few days apart from each other.