The Control Freak makes charts and lists and assigns every aspect of the evening down to the flavors of the salad dressings and oven timing. He/she is on top of all details and runs a tight potluck ship.
Organized but Mellow wants to avoid the three-taco-dips-but-no-dessert kerfuffle but is not interested in controlling things beyond that. He/she will assign guests a basic category (appetizer, main, dessert, cups and ice) and then relax.
Oh, Bring Whatever! believes that half the fun of a potluck is seeing what people show up with, so he/she stays completely hands off. He/she embraces the three-taco-dips-but-no-dessert possibility and upholds the notion that the whole reason to throw a potluck is to avoid working too hard.
I Don't Host Potlucks probably has many reasons for this and will hopefully share a few of them in the comments.
(Image: This Magazine)