Common paint thinner is in fact mineral spirits which is stoddard solvent. It is a fact. All those chemicals yopu listed are not paint thinner. They may be used to as a solvent in certain coatings such a lacquer.
Stoddard solvent was the original dry cleaning solvent. That is a fact and Mr. Stoddard had a hand in it's design.
What I would like to know is where you got the formula for WD-40? It is a secret formula. So how would you have have it?
Please read the information on the sites below and then call BS.
Go to any Home Depot, Lowe's or paint store and ask for paint thinner see what they hand you. Read the label it says mineral spirits right on it.
Now if you go to WD-40's site it will tell you it contains 50% mineral spirits.
WD-40's formula is a trade secret. The product is not patented in order to avoid completely disclosing its ingredients. WD-40's main ingredients, according to U.S. Material Safety Data Sheet information, are:
* 50%: Stoddard solvent (i.e., mineral spirits -- primarily hexane, somewhat similar to kerosene)
* 25%: Liquefied petroleum gas (presumably as a propellant; carbon dioxide is now used instead to reduce WD-40's considerable flammability)
* 15+%: Mineral oil (light lubricating oil)
* 10-%: Inert ingredients
The German version of the mandatory EU safety sheet lists the following safety-relevant ingredients:
* 60-80%: Heavy Naphtha (petroleum product), hydrogen treated
* 1-5%: Carbon dioxide
It further lists flammability and effects to the human skin when repeatedly exposed to WD-40 as risks when using WD-40. Nitrile rubber gloves and safety glasses should be used. Water is unsuitable for extinguishing burning WD-40.
There is a popular urban legend that the key ingredient in WD-40 is fish oil. However, the WD-40 web site states that it is a petroleum based product 
Now before you start calling people liars have some facts to back it up. Here are just a few of facts that back my statement.