Hi, Dee!
I’d say that if you have a whoopie pan that “contains” the batter, you can use any cake recipe, because you don’t have to worry about them spreading and being whoopie pancakes. However, if you’re going to make them on a cookie sheet, you will need a thicker batter. I haven’t spent much time figuring out how the batter is thickened or structure added (eggs/more flour/less liquid), but I would think that one element would be less baking powder (to strengthen the structure and let them dome).
Good luck—and if you modify batters with success, please tell us what you did!
—ak