What I (an asexual with no hear me outs) think avatars of specific fears would put on a hear me out cake:
The Buried - Rocky from Project Hail Mary, the movement of tectonic plates, the Monopoly man
The Corruption - Any of the bees from The Bee Movie, the clipart worm with glasses that comes out of the apple, plague doctors
The Dark - The person you think you see when you wake up in the middle of the night and notice a pile of clothes on a chair, solar eclipses, the creature you run from when you turn off the lights in the basement
The Desolation - The flame from burning copper sulfate, the smell of gasoline, the Roman emperor Nero
The End - The concept of rolling a nat 20 (also the concept of rolling a nat 1), the knight from Indiana Jones and the Last Crusade, those big as hell skeleton decorations people put up for Halloween
The Eye - The Eye of Sauron, Jonah Magnus, security cameras
The Extinction - Algorhythms, the demon core, the ChatGPT logo (not the bot, the logo itself)
The Flesh - The concept of cannibalism as a metaphor for sex, practical effects/gore makeup in horror movies, the eel from Iron Lung
The Hunt - The parkour guy we all imagined as kids running next to cars, vampire pumpkins/watermelons, Venus flytraps
The Lonely - Waldo from Where's Waldo, fog machines, the green light from The Great Gatsby
The Slaughter - World maps with outdated borders or maps made right before major wars, medical malpractice, knife sharpeners
The Spiral - Ms. Frizzle, the song Hotel California, the parent/relative of someone else contributing to the cake
The Stranger - The hat man, this specific mannequin, the comedy/tragedy masks
The Vast - Sagittarius A*, Horton from Horton Hears a Who, the creature from Ex Altiora
The Web - Charlotte from Charlotte's Web, Mr. Spider, Jorōgumo