Halloqueen
"Yoko has returned, they cry."
To be honest, at this point, following numerous themed New Leaf towns and now this New Horizons island, I don't know that there are necessarily any themes to bind together the remaining dream villagers I haven't had as residents anywhere yet. My New Horizons island didn't acquire its historical theme until after I'd already started; before that, I didn't really have any good ideas and was just going to go with a "tropical island" theme. I'd probably just forego a theme for an additional island and just pick whoever.