There are many thousands of drugs that are rated as being dangerous due to its potential for abuse and or toxicity, and therefor all drugs prescribed or illicit are classified into schedules, and many drugs can be dangerous, if taken incorrectly, mixed with other drugs and or alcohol.
The US has classifications of drugs into schedules from I-V;
Schedule I is drus of addiction such Herion, GHB, LSD etc and do not have a recognized medicinal use.
Schedule II is drugs or other substance that has a potential for abuse, such as Methylphenidate (Ritalin) & Dexmethylphenidate (Focalin) (used for ADD/ADHD), Opium, Methadone (used for heroin addiction and treatment of extreme chronic pain), Oxycodone, Morphine and Pethidine, and have a recognized medicinal use.
Schedule III is drugs that still have a potential for abuse but supposedly less so than the above, Hydrocodone, codeine, Ketamine.
Australia has all drugs illicit or prescribed classified into schedules too, but from schedule 1-8 schedule 2 is over the counter medications etc, through to schedule 8 which is a controlled substance.
I doubt that you will get a accurate list as this may vary from Government bodies and country to country.
Sorry I could not be of more help.
Edit;
I only noted a few drugs that are scheduled, and I gave a link to the DEA which it states clearly that is is not a comprehensive list. But many drugs if not all drugs are evaluated for the potential for abuse etc, even over the counter medications have been assessed for potential abuse and or dangerous reactions etc. Here is some further reading which may help clarify things.
http://www.usdoj.gov/dea/pubs/csa.html
http://en.wikipedia.org/wiki/Controlled_…