>>212758258The only place proper Indian Buddhism survived this side of the Himalayas is among the Newar people of the Kathmandu valley in Nepal, though only a tenth of them are Buddhists.
There is also a small town in Orissa with a community of weavers who claim to Buddhists and migrants from Bengal (the last Buddhist stronghold in the plains, before Buddhism disappeared even there) but I can find very little information on them.
Besides that, Tibetan Buddhism is very late stage Indian Buddhism, which becomes evident when you study texts like the Kalachakra Tantra. There is a small but very visible Tibetan and Tibetan Buddhist community in a few towns and cities in India, especially Dharamshala in Himachal Pradesh in the Himalayas which is the seat of the Tibetan government in exile, and in Delhi too where there is a small Tibetan refugee locality called "Majnu ka Tila." Whenever I go to any malls in the rich part of the city there are always some Buddhist (I'm assuming Tibetan) monks there which always confuses me. At the mall they always wear red sneakers to match their robes.
There is a third form of Buddhism present in India which can hardly be considered Buddhism, it is a political movement among a handful of the lower castes which calls itself Buddhism though they reject all of its teachings like the four noble truths, reincarnation, samsara, nirvana, and the like.