For me, it's alll my villagers, and the ones I remember I had from my old game. (Bold are ones I currently have)
Tier 4- Pecan, Tom, Gayle
Tier 5- Mallary, Sylvia
Tier 6- Alfonso, Iggly, Kitt, Knox, Olaf, Penelope, Twiggy
(Tier 1 I have Stitches, Tier 2 I had Pietro and Kiki, Tier 3 I had Lobo...