Donald Trump is an American businessman and politician associated with the Republican Party. He served as the 45th president of the United States from 2017 to 2021. His tenure as president was known for his war of words with North Korea, a trade war with China, and his claims to build a wall to stop immigration from the south.
He is the first president to be impeached twice and one of the very few to not get a second term in office. Trump started his career by joining the family business and rose to be a real estate tycoon. He then went on to host reality TV before joining politics in 2016. While he faces numerous felony counts and civil and criminal cases in US courts, the most infamous is his alleged role in the 6 January Capitol Hill attacks, where his supporters stormed the building after Joe Biden won the presidential election in 2021.
Indian Americans are, typically, very well educated people and fall in high income category. They are very similar to Chinese/Korean Americans in their socio-economic profile.
There is absolutely no reason for them to club themselves with other minority communities (such as Hispanics, Blacks, etc.). Simply because there is nothing in common which can bind these disparate communities together.
As such, it is natural for them to veer towards Republicans.