Audio: audio/mp4 audio/mpeg audio/ogg audio/vorbis audio/webm
Image: image/apng image/avif image/gif (Optimizable) image/jpeg (Optimizable) image/png (Optimizable) image/svg+xml image/webp (Optimizable)
Video: video/mp4 video/ogg video/webm video/quicktime
Kind of like DNS, but not as useful.