Intro
MGA was a follower of the Ahl-e-Hadith aka Wahhabi type of Muslims in Northern India.  In fact, his second wedding was with a family of Muslims who were Ahl-e-Hadith.  His best friend, Maulvi Muhammad Hussain Batalvi was also Ahl-e-Hadith, the list is endless.  MGA had a beef with Nawab Siddiq Hasan Khan after he tore up MGA’s Braheen e Ahmadiyya and sent it to Qadian in that condition.  We have found a thesis on the life and times of Nawab Siddiq Hasan Khan, we have posted the links in the below.

The links
https://archive.org/stream/ContributionOfNawabSiddiqHasanKhanToQuranicAndHadithStudies/Contribution%20of%20Nawab%20Siddiq%20Hasan%20Khan%20to%20Qur%27anic%20and%20Hadith%20Studies_djvu.txt

https://www.worldcat.org/title/life-and-works-of-muhammad-siddiq-hasan-khan-nawab-of-bhopal-1248-1307-1832-1890/oclc/1992870