Found this recently published research study on Maternal Ancestry of Gujarat. (N=168)

Summary:

* Around 76% of maternal lineages are indigenous South Asian
* About 21% are West Eurasian, but:
   * Most of these are ancient (pre–5,000 years)
   * Only a small portion is from more recent periods
* East Eurasian input is almost negligible (\~0.6%)
* Insane continuity in maternal ancestry for \~40,000 years
* No evidence of large-scale maternal population replacement during:
   * Indo-Aryan migration period
   * Indus Valley changes
* Several indigenous lineages from India have been observed in West Eurasia, indicating bidirectional gene flow
* "West Eurasian lineages, introduced through phased Pleistocene-to-Holocene incursions, show minimal contemporary signals aligned with Indo-European linguistic dispersals, thus refuting models of significant female-mediated Steppe admixture during the Indo-Aryan period. Only around 19% of such haplogroups postdate this period, while approximately 81% date back to pre-Steppe times."
* Haplogroup M33a (Indian origin) connects with Iranian lineages \~18,000 years ago
* "The presence of deeply rooted Indian haplogroups such as M33a, M3a1b, M5a2a, and M35a in West Eurasian regions suggests that maternal genetic material flowed westward from India. For example, the phylogeographic association of M33a with Iran at \~18 KYA highlights a probable ancient migration from India to Western Eurasia, challenging unidirectional migration models."

  
Research Article: [https://pubmed.ncbi.nlm.nih.gov/41474133/](https://pubmed.ncbi.nlm.nih.gov/41474133/)

Overview: [https://timesofindia.indiatimes.com/city/varanasi/maternal-ancestry-of-gujs-popn-dates-back-to-40000-yrs/articleshow/126309322.cms](https://timesofindia.indiatimes.com/city/varanasi/maternal-ancestry-of-gujs-popn-dates-back-to-40000-yrs/articleshow/126309322.cms)

Gujarati maternal ancestry shows 40,000 years of continuity