DOC signature visuals for me are spirals, line DNA strands, waves of visible energy moving through the air, and endlessly repeating patterns of whatever you happen to be staring at. Oh yeah, how could I forget the neon-blue edged black hole looking portals in space (most often seen for just a second)...
LSD visuals... somebody called them "dirty"? Far from it, in my experience. LSD will turn lights into fractal rainbows. Everything will crawl itself into a moving, overlapping pattern. The trees glow with energy. Most objects have an aura, even things like a table or drawer.
Mushrooms... in medium doses the trees will squirm. That potted plant just turned into a lion for a minute! Faces flowing in wood grain. That chair just elevated off the ground and now its glowing! On higher doses, the whole world is like a Van Gogh painting, in full motion. CEVs are remarkably vivid and high in contrast, we're talking full motion 100's of tribal dudes dancing on a 3D rotating chess board while beams of electric energy connect you and everyone else who happens to be within a 5 mile radius together in an energy-grid.
San Pedro / Mescaline... Much flowing, especially in wood and natural objects. Kaleidescopic clouds. Once a neon female entity sat next to me for a moment. Staring at anything for a while will produce cob-web like, very intricate, growing designs.
4acoDMT... like DMT in slow motion. Or mushrooms with a cosmic, sparkly twist. Houses look like something out of a fairy tale.
2C-I ... swirling rotating patterning flowing everything. Porcelain is beautiful. Walking on grass, the blades step away from your feet. Long stop-motion tracers. Neon CEVs.
yeah I can only do so many of these at once.. cool thread though. Interesting how some people get almost opposite visuals from the same drug, but there are definitely certain trends.