Arent all those AMT, (DMT ?) MeO PCP DALT and c3 (or watever) and even NEK psychedelics (to some extend or other) ?
You can tell i dont know much abt psychs, but i believe they all are, UK legal too (mostly)
DMT isn't legal. I dunno, it's all subjective what you want out a drug. Concentrating on visuals, I haven't tried DMT and I don't know what C3 is but of those in your list I expect DMT is the best for visuals, but very unlike acid in that it's a short experience (unless you add an MAOI). I've only had traditional visuals on 3-MeO-PCP when I've combined it with MXE. I've had good visuals on AMT, 3D animated structures synchronised with music and thought processes - but only really at the peak for a short time.
LSD visuals, for me anyway, are very special. They last the full length of the trip, for a start, and they're super-detailed. My favourite bit of an acid trip is the comedown, once the mayhem is over I lie down, close my eyes and create music and visuals to go with it in my head, and it lasts for hours. Not found anything else that compares with it in this respect (the following paragraph excepted). I have been hoping to get something similar from one of the NBOMe chemicals.
Dissociative visuals are different in that it's more like a fully immersive dream state. But tolerance has killed this for me

My first MXE and 3-MeO-PCP combo gave me amazing visuals which were similar to LSD but sort of better in that I had more control over them, in fact they were the output of a yet-to-be-invented supercomputer* that had been connected to my brain so they came with that bonus. But I get fuck all nowadays.
* I reckon this was the extension of consciousness to normally subconscious processes, it was as if my brain had had a 10x performance upgrade and I had full conscious control of all its processes. If only I'd applied this power to an analysis of the different types of steak.