The potential for a bad trip personally is #1 shrooms by a wide margin if it's anything over a single gram. Definitely the worst because they're more emotional imo.
LSD is my go to. Most stable on it, especially if I'm outside just walking around.
DMT despite making a bunch of it, only used once so far. I had a great time. Euphoria afterwards was amazing. I enjoyed ego death, no fight. So intense though and I hit it properly first try. Haven't worked up the nerves to revisit. Even though I get no visuals in general closed eyes. Aphantasia even DMT can't override.
Now that we got DMT vape carts in Canada I'm wanting to revisit because I can control dosage way better and experiment. I've always heard the opposite: that DMT is hard to have a bad time with.