u/LuckDuck2017

I'm posting this because I really couldn't find them myself online, so I just spent a LONG time brute-forcing this. If you want the title "Winter Soiree Organizer", enter these combinations of Greeter Cats:

Power + Kamen Kater + Foxy
(This will give you both Lenna and Robella)

Power + Nana + Foxy
(This will give you Alva)

Frosting + Kamen Kater + Hero
(This will give you Yoohee)

There might be slightly different variations of this depending on if you haven't unlocked the extra greeter-cat seats, but this is what worked for me.