Here’s a simplified categorization based only on whether the work falls under Rococo, Enlightenment, Neoclassical, or Romanticism:
Rococo
The Swing
The Tête à Tête, from Marriage à la Mode
Enlightenment
A Philosopher Giving a Lecture on the Orrery
The Palace at Versailles
Neoclassical
Monticello
The Oath of the Horatii
George Washington
Self-Portrait (Elisabeth Vigée Le Brun)
La Grande Odalisque (Leans towards Romanticism but rooted in Neoclassical ideals)
Romanticism
Y no hay remedio (And There’s Nothing to Be Done)
Liberty Leading the People
The Oxbow
Slave Ship
Palace of Westminster (Houses of Parliament)