I'm always interested in new ideas for themed parties and hadn't yet seen this one: The Trump Family! Please be nice (whether you think they deserve it or not) and let's have fun!
Big Donald - pure Cleric, great with crowd control and buffs
Melania - Sorcerer, lots of natural talent
Donald, Jr - Cavalier, stalwart knight with no ranged options
Ivanka - Cleric/Mage/Thief, ultimate utility character
Eric - Fighter, some extra muscle/tank
Tiffany - Shadowdancer, always in the shadows