Who are the armed groups India accuses Pakistan of backing?

Tensions are higher between India and Pakistan than they have been in decades as the two countries trade blame for drone attacks on each other’s territory over the past few days. At the heart of the dispute is what India claims is Pakistan’s support for armed separatist groups operating in Kashmir, a region disputed between the two countries.
An armed group called The Resistance Front (TRF) claimed responsibility for the Pahalgam attack in Indian-administered Kashmir last month in which 26 people were killed. India alleges that TRF is an offshoot of another Pakistan-based armed group, Lashkar-e-Taiba (LeT) and has blamed Pakistan for supporting such groups.However, the group was not widely known before the Pahalgam attack, which it took responsibility for in April via the Telegram messaging app, on which it said it was opposed to the granting of residency permits to “outsiders”.
Since the repeal of Article 370, non-Kashmiris have been granted residency permits to settle in Indian-administered Kashmir. This has stoked fears that the Indian government is trying to change the demographics of Kashmir, whose population is nearly all Muslim.