Missing stuff on shelf?

Haven't been able to find any answers for this so I went to find a love ghostie subreddit :3 When I played the game I got the plushies on the shelf but 4 we're missing. Like there were 4 spots for plushies of characters that don't exist. I was wondering if anyone knows if it's meant for an update, a dlc, or maybe some secret thing? Please respond if you have any ideas! Thank you :D