That's why I'm asking you guys, I was trying to think of cross-tribal dieties that are similar, such as how the Egyptians and Romans ended up borrowing beliefs and gods from each other. which eventually just mashed together, from what I understand, I could be wrong.
Not really. The ancient world was still a place of many distinct regional deities with an overarching philosophy rationalising their multitude. That, I think, could be achieved in time, but only if you take an early and massive POD.
Eastern woodlands and the Mississippi culture are good candidates for a beginning of syncretic developments. Exchange between larger groups can create a shared 'main pantheon' of Gods everybody worships while local deities remain unaffected. You still need to create better communication across the continent to make it spread, so I'd say an early introduction of horses and metalworking, prior to contact with any Abrahamic tradition. Call it the Romans, Carthaginians, Celts or Iberians. That goves the locals several centuries to absorb the disruptive effects of these introductions and creates the social upheaval required for large-scale religious change. In the long run, settled societies will win out over horse nomads, but the nomadic tribes will make contact across the plains possible and trade and exchanges develop. I still think there will be several panthea rather than one, but you could get a situation closer to the ancient world.
An alternative POD I could offer is that Indian Independence leads to civil war. That way, by the 1960s people associate India not with spiritualism and gentle pacifism but with massacres and ethnic violence on a horrendous scale, with Muslims, Sikhs, Buddhists, Hindus, Naga, Baluchi, Punjabi, Bengali, Tamil, Sinhalese andsoonandsoforth at each other's throats. That way, the 1960s counterculture does not have Buddhism or Hinduism, Krsna Consciousness or Zen to embrace and in much larger numbers flocks to neopaganism and neoshamanism. By the 1990s, a lot of former hippies are in middle-class or better jobs as preactising neopagans, and neopagan charities distribute largesse to their 'co-religionists' worldwide. Numerous large organisations subscribe to the idea of a 'syncretic Native Americanm belief system' emerging to unify the nations, and many of the economically worst hit reservations have embraced it to get stupid white folk to build them schools, temples, cultural centres, seminar homes, roads and airstrips. Europeans pay thousands of dollars to fly out to the Holy Mountain and pray, much like todeay Nepal is cashing in on Buddhotourism.