Although I am not sure about Sant Samaj's linage as from Maharaja Ranjit Singh, or if the Sant Samaj that I'm thinking about is even the same.
Mid 1900's SGPC started to implement a lot of new ideas and started making changes in Sikhi. This resulted in much confusion within the Panth and caused for many splits, and other things to start up. One of the major and most dominating issue of the time was the SGPC's implentation of Pad-Ched printing of Maharaj Saroops.
This "noise" being made, led to the main sevadaars, great and respected Saints, and leaders of the major Jathaybandi's etc to come together to oppose such actions that where being taken by the SGPC.
The various Jatha's and samparada's of the time got together with a common goal and had several meetings at different venues to do veechar on this issue. Such meetings occured at Sri Amritsar Sahib, Damdama Sahib, Keeratpur Sahib, Rara Sahib and one of the largest at Bhinder Kalaan on the 11th of September, 1959, at which time all the big time saints of the day came together and created a committee, which consisted of the following Mahpursh:
1. Sant Baba Hari Singh Ji Kahaarpurieea
2. Sant Giani Gurbachan Singh Ji Bhindranwale
3. Sant Ishar Singh Ji Rara Shib
4. Sant Ishar Singh Ji Kalairaa(n) (Nanaksar)
5. Sant Baba Bhagvaan Singh Ji Rairoo Sahib
shindasingh got a reaction from Arsh1469 in Creation of "Sant Samaj"