Re: Typical
I think that applies to both parties.
Yes, for the most part. It's difficult to get elected, particularly to the House with its disastrously short 2-year terms, if you're not going to grandstand (to appeal to your constituents) and toe the party line (to appeal to the party).
There are exceptions. You mentioned Wyden, a Democrat; in the interests of fairness, I'll cross the aisle and mention Justin Amash (R-Michigan). I certainly don't always agree with Amash (though since I'm not in his district that's pretty irrelevant in practice), but he's famous for explaining his votes on his website - and I believe to date he's only ever missed one vote - and he's a stickler for his principles, frequently defecting from the party line.