Thanks you.In the Villager Trading Plaza there is Villager Popularity List which gets updated regularly so people know how to price the villagers that they are selling, this is where I got the tier for my favourite and am assuming everyone else did.
http://www.belltreeforums.com/showthread.php?354714-Villager-Popularity-List-Updated-4-4
Anyways, my favorite is Kid Cat who is tier 3. Kind of underrated imo