Answer

In Khandelwal Jain/Sarawagi tradition, the community is said to have 84 gotras. A Jain historical source says, “This caste is known today to have eighty four gotras,” and a Jain community survey also gives an appendix list of Khandelwal gotras. For the “biggest group,” the best-supported answer is the broader Khandelwal Jain merchant branch: one scholarly source says Khandelwal Jain merchants have the largest population in Rajasthan, so that branch appears to be the largest Khandelwal group there. ( jainqq.org)

Explanation

The gotra system in Khandelwal Jain tradition is used for lineage and marriage identity. The list is recorded in community books, but spellings and ordering can vary by source, so I do not want to guess at an exact 84-name table from a messy OCR copy. The safe traditional statement is that the Khandelwal Jain caste is recognized as having 84 gotras. ( jainqq.org)

Takeaway

So the clear answer is: Khandelwal Jains are traditionally said to have 84 gotras, and the largest broad group is the Khandelwal Jain merchant branch—not a single gotra. If you want, I can next format the gotra names from a specific Jain community source into a clean table. ( jainqq.org)