IV 4acodmt was comparable to smoked dmt, for sure. It just came on wayyyyy faster, and that alien tryptamine feeling engulfed my body at the speed of light, way stronger and more intense than any dmt trip ive had. Smoked dmt might have more fractals/visuals and the like, but again that probably depends on the circumstance. I certainly saw some wild stuff on the 4acodmt trip, it just wasn't 'visuals' in the very traditional sense like you would see on other psychs. It was like, the music from my computer and the lights from my computer become engulfing and took on a life of their own, and I felt my emotions and feelings very strongly.
And salvia, I've only really ever done once that got a full effect. I wasn't much of a fan, and I think all I did was lay on the ground laughing really hard for 5 minutes. Not really comparable to the other substances you mentioned imo.