Not sure how serious he is about it, but he has tossed out lots of comments on podcasts about it. It is often characterized as Christian Nationalism, that is, using the government to try to impose Christian ideals on the populace. Banning abortion fits with this, along with anti-LGBT stance. They would generally be anti-marijuana, and in some of the very extreme forms, even advocate women playing a more subjugated role to men. On the positive side, lots of support for families and kids. A lot of the ideas aren't necessarily Christian, more Old Testamenty, with a strong fondness for classical western ideas (think Greek and Roman).
There also tends to be a strong current of White Supremacy in this movement, and Trump has certainly played to that crowd. Vance has kind of gone along with it, but I don't think that is his vibe.
If we get over the anti-compromise stance that has plagued Washington for several decades, I could see agreement being reached on things like Child Tax Credit and other pro-family ideas. I also think there is agreement on things like Tech regulation and anti-monopoly regulation. And with so much of the populace now being in favor of immigration resriction (a really shocking move in this direction over the past 4 years), I think bi-partisan border security deal will be passed quickly no matter who wins next week.
This podcast (Ezra Klein, very progressive)
episode discussed POLICITAL ORDERS, general agreements on ideas that last decades. By his telling, the 20th century was dominated by the New Deal order from the 30's through Carter, and then Neoliberalism from Reagan through Great Recession. He thinks we are in the process of building a new policital order, and I think the ideas of people like Vance will help shape that. Interesting ideas if you like podcasts and have some time.