Like with the shapes it's like this:
Rank 4, 34, 49
Can someone tell me the ranks for the other ingredients? I don't wanna check the page so I don't get spoiled on the character unlocked with or what it is ;-;
Shapes (as you mentioned): 4, 34, 49
Chunky Fillings: 6, 26, 39, 45, 50, 55, 59, 60 (also Day 2)
Cream Fillings: 2, 5, 9, 16, 25, 29, 35, 36, 44, 54
Dips: 10, 15, 19, 40
Drizzle Toppings: 3, 21, 30, 65
Shaker Toppings: 14, 20, 24, 31, 64
What do you think?