I have a complete list!
Rank 1: Newbie
Rank 2: Trainee
Rank 3: Tray Cleaner
Rank 4: Cashier
Rank 5: Toast Topper
Rank 6: Ticket Handler
Rank 7: Cinnamaster
Rank 8: Waffle Wrangler
Rank 9: Order Attendant
Rank 10: Berry Buddy
Rank 11: Topping Artist
Rank 12: Mixable Trainee
Rank 13: Pancake Fan
Rank 14: Pecan Fan
Rank 15: Mixable Master
Rank 16: Drink Assistant
Rank 17: Tea Brewer
Rank 18: Ice Dispenser
Rank 19: Orange Juicer
Rank 20: Cocoa Champ
Rank 21: Milk Server
Rank 22: Crantastic
Rank 23: Cream Whipper
Rank 24: Maple Master
Rank 25: Honey Drizzler
Rank 26: Blueberry Buddy
Rank 27: Butter Lover
Rank 28: Top Banana
Rank 29: Super Stacker
Rank 30: Coffee Pro
Rank 31: Griddle Hero
Rank 32: Waffle Ironer
Rank 33: Flapjack Flipper
Rank 34: Hotcake Hero
Rank 35: French Toast Fanatic
Rank 36: Part Time Manager
Rank 37: Morning Master
Rank 38: Breakfast Chef
Rank 39: Restaurant Manager
Rank 40: Sunrise Specialist
Rank 41: Pancakeria Pro
Rank 42: Breakfast Champion!