Answer

Upadhyaya Shri Kewal Muni ji is described in Jain sources as a distinguished disciple of Jain Divakar Shri Chauthmal Ji Maharaj, so his guru was Shri Chauthmal Ji Maharaj. ( jainqq.org)

Explanation

The sources I found clearly identify his guru, but they do not give a complete, reliable list of Kewal Muni ji’s own disciples. One source also describes him as the “principal influential disciple” of Shri Jain Divakarji Maharaj. ( jainqq.org)

Takeaway

So, the verified guru name is Jain Divakar Shri Chauthmal Ji Maharaj. For his disciples, I could not confirm a full authentic list from the materials checked. ( jainqq.org)