The greatest Indian Empires were founded by men from Nepal, North East India and Central Asia all of whom were of the "mongoloid race".

Mauryan Empire, Gupta Empire, Mughal Empire.

Chandragupta of the Mauryan Empire was a Nepali of the Sakya clan(as was Siddharta Gautama The Sakya clan exists to this day. They were described as a "mleccha" people from the Himalayas with skin of golden hue which is in accordance with their current physical appearance) who migrated to Madagha, took power with the help of his advisor Chanakya(an intellectual who wrote India's version of the Art of War and who was imagined as a Mongoloid Nepali man with the traditional Nepali haircut until the early 20th century by Indo Aryan artists). In his wars against the Nanda Empire and the Greek satraps, his most valued ally was King Parbatak of Limbuwan, son of King Jeitehang, descendant of King Bhauiputahang all of whom were Kiranti people(Tibeto-Burman). Ashoka, first unifier of North and South India was the grandson of Chandragupta.

The Guptas were vassals of the North East Indian Naga people who lived in close proximity. They migrated into Madagha and took power. Coins depicting Gupta Emperors wearing North East Indian fashion from the Gupta period and Murals in the Ajanta caves commissioned by a Gupta princess (she was half Naga of Padmavati which means she was half Central Indian) from the Vakataka- Gupta period show evidence of their origin.

Siddharta Gautama was a Mongoloid. The Sakya still thrive in Northern Nepal though they were once present all over Nepal. Ancient Nepal was not populated by Indo Aryans. Greco- Buddhist statues depict him and other Buddhas and Boddhisattva with Mongoloid features. Contrast their features with the Greco Buddhist guardian statues of Heracles or Kushan disciples. The topknot Siddharta Gautama is known for can only be found in Mongoloid cultures. Palm Leaf Manuscripts found in Bihar depicting Siddharta show an extreme Mongoloid phenotype with maximized Mongoloid features such as golden skin, strong monolids, smaller nose, non prominent browridge, high eyebrows, wide square robust skull, as if painted by people who had only ever heard about Mongoloid people: https://upload.wikimedia.org/wikipedia/commons/c/c1/Astasahasrika_Prajnaparamita_Victory_Over_Mara.jpeg

They are of the Sakya clan. The Sakya are well and alive. They are Nepali Mongoloids. You can visit their monasteries and ask them about their lineage.

Chandragupta was a Mongoloid Man of the Sakya clan of Siddharta Gautama who was also a Mongoloid Man(one of Ashoka's famous inscriptions proclaims his Sakya descent, Ashoka called himself "Buddhi Sakya[muni]", the Sakya are and were related to the Limbuwan Kiranti who also exist to this day) who came from a migrant Nepali Sakya family and had settled in Bihar, who conquered the Nanda Empire of Magadha, which while not considered "mleccha" was nonetheless seen as a more uncivilized area compared to ancient North West India. As a Mongoloid mleccha conqueror, he fought the most likely Indo Aryan Nanda Empire with the help of his Kiranti Limbuwan allies. He then proceeded to make use of his new resources, geared up his military machine with the help of Chanakya whose school of thought on statehood, governance and warfare must have been as influential to the Mauryans as Legalism was to the Qin, gave parts of reconquered Bihar to the Limbuwan kingdom and defeated the Seleucid Greeks, marrying Seleucid's daughter. His son Bindusara may or may not have been an AMWF Half Mongoloid Nepali- Half Greek hapa. Seeing as how Ashoka claimed his religious Sakya lineage rather than a Greek Macedonian conqueror lineage in connection with Alexander the Great whose legacy was glorified across ancient Eurasia, I doubt Bindusara and Ashoka were mixed race, and in any case the product of a marriage alliance rarely ascends the throne. Bindusara is more likely to have been Full Mongoloid. They would not have married into the local populace (though their armies/military men and allied armies would have taken Indo Aryan women as war booty literally, wives and concubines), and they destroyed the Nanda house.

Sadly, the coins of the Mauryan Empire are not nearly as illustrative as those of the Gupta Empire.

Gupta coin: http://coinindia.com/Chandra-4814.2Ev-503.20.jpg

Gupta coin shows a Mongoloid man with composite bow wearing traditional North East Indian fashion and a helmet of a type widely found in the Sinosphere(especially China, Vietnam, Burma[part of the Sino-Tibeto- Burman language family] and Tibet). "Ceremonial helmet Tibet" would probably get you results on google.

Gupta period murals in Ajanta caves:

Mongoloid type: https://upload.wikimedia.org/wikipedia/commons/c/c5/Ajanta_Padmapani.jpg

Dravidian- Indo Aryan type: https://upload.wikimedia.org/wikipedia/commons/0/0e/Indischer_Maler_des_7._Jahrhunderts_001.jpg

It was common knowledge in India that the Mauryans were in fact Nepali Mongoloids. Indo Aryan Artist's impression of Chanakya, early 20th century: https://upload.wikimedia.org/wikipedia/commons/c/cd/Chanakya_artistic_depiction.jpg

http://coinindia.com/galleries-samudragupta.html

http://coinindia.com/galleries-chandragupta2.html