Well, Butters wasn't mentioned.
Thomas may be dead, or just not involved in this part being no old-dad-who-knows. Who did we really see? Michael, and Winter who have the gift-giving as a kind of 'thing'. Not sure why Molly, Mab, and Kringle all showed up separately but they did anyway.
But for all we know, this was just how it goes - Harry works on his daughter's gift, Michael thinks to come over because he knows it's special to Harry, and everyone else is just home preparing their own thing for the next morning - though obviously it means Murphy isn't coming over to live in Harry's house, that could be either through their relationship or her being-aliveness.