We don't know how Hinduism first came about, and the only way for it to be discovered after that was by individual people or soceities. This question needs more information for an accurate answer.
Hinduism is a very ancient religion, and history does not record the name of its founder.
Hinduism was discovered in India
For Hinduism to have been discovered it has to have died out or be a thing. Since it is neither of those it was never discovered in a particular place.
The Aryans, but Hinduism is very old so other groups may have discovered it but were bot recognized
Dilia si Lane' has been discovered Hinduism.The method of Hinduism was been there from past 20 million years.
A great scientist like Einstein, discovered or realized laws of physics, Hinduism would call him a great Rishi.
knowledge thet is revealed to, or discovered by, the wise man of Hinduism.
Hinduism was originally discovered being practiced in India. Hinduism translates to "Indianism," which is what the immigrating Aryans called the ancient religion. Much of India's population today practices Hinduism, and it is the major religion of the country. About 83 percent of India practices Hinduism. This religion eventually spread, but its roots remain in India.
That is enveloped in hoary mythology. What is now Hinduism may have started at the time when humans first came to India from Africa, 60,000 years ago. It must have changed a thousand times, but there is no reason to suppose a break.
Technically nobody "discovered" rasgulla, but it was certainly created in Orissa (now spelled Odisha) a few centuries ago. In all likelihood, it began in the kitchens of the Jagannath temple at Puri, one of the four Dhams in Hinduism.
Hinduism and buddism
Hinduism
There is no founder of Hinduism.