Shrimali Jain gotra is one of the patrilineal Jain gotras used by some Jain families. In Jainism, gotras indicate a lineage within the community and are often reflected in surnames among both Śvetāmbarā and Digambarā groups. It is not a separate sect or religious order, but rather a family/clan name that identifies ancestral lineages within the Jain community. If you want to know its exact origin or how it is treated differently in Śvetāmbara vs. Digambara traditions, please specify the sect and region, and I can explain with traditional Jain understanding.