...I think there would be no reasons for anti-semetism...
The Romans REALLY disliked the Jews, though. Largely for having been rebellious to the point of being unmanageable until they just scattered the entire population throughout Europe -- nothing really to do with their faith. At that point you still have a people bereft of a homeland, practicing a different faith and speaking a language other than than that of the majorities they are forced to cohabit with. Humans being petty creatures that enjoy tribal distinction, I feel like they'd still face some serious prejudice. It might even be WORSE when the dominant faith is not a relative of the one they practice.
I feel like, while not a globe-spanning faith, forms of Norse Paganism would likely be very strong in their home range (Scandanavia, with some influence in Germany and England), considering that the faith is already experiencing a modern revival under worse circumstances than would be projected in these timelines. At least in "Bhuddism takes the world by storm" timeline, I feel like it would survive much like Shinto or Hinduism in our "prime" timeline.
I wonder how well you're going to be able to project any of this past the sixteenth or seventeenth century. The late Nineteenth century and the 20th century are going to be frighteningly heavily divergent where in our timeline the United States, its culture founded in puritans and religious exiles (self imposed or otherwise), became a world power if not the world power. There's a LOT of good land in North America so whoever or whatever arises to lay claim to it is going to have a huge industrial base and population capacity and will probably make world power status as of the rise of mass production technology. But it's not even going to faintly resemble our timeline, since the identities, drives, and more importantly philosophies of the colonists coming in with extreme technological advantage (and smallpox, intentional or otherwise) to claim that land aren't going to resemble what we see in our own history. Other colonized territories will be similarly divergent: Without Rome to draw an arbitrary border on the New World that Spain and Portugal could agree to, there's a good chance the early colonial period is much messier and bloodier than in our timeline, leading to dramatic shifts in national prestige that hinge on the uncertain outcome of major battles. Assuming technological development and spread follows a similar pace to our timeline (For the sake of sanity if nothing else) England probably gets into the game late, north, and very effectively all the same but might posture with a different attitude if colony-to-colony warfare is a recognized concern.