The original Romero trilogy should be good. I didn't mention them above due to the bare zombie ass in Night and a breast in Dawn. Neither are in a sexual context. After I posted Monster Squad, I started to remember how problematic it has become over the years. I remember teachers allowing us to watch it in school in the late 80s early 90s. Coming up with movies that seem appropriate has been difficult for me. I was given free reign at the video store growing up, so I watched all kinds of fucked up stuff. Think Last House on the Left and other 70s and 80s craziness and trash cinema. The Texas Chain Saw Massacre (74) and Suspiria may match the criteria.