I don't think I could do anything that would hurt or traumatize anyone. It goes against my morals and I don't want to cause any suffering to anyone. The last thing I want to die from is something that causes any suffering to others. I don't want anyone, especially a stranger, to carry the burden of my suicide. So methods that are very gruesome to the person finding me like gunshot, jumping off train/in traffic, premeditated car crash.
Anything incredibly painful is immediately off the table. I can't do it. Burning, electrocution, drowning, starvation, dehydration, deliberate disease, consuming pesticides, or any cartel and mafia-like death come to mind. Nothing so gruesome that people will actively look for it on liveleak or something similar.