All Christian religious lifestyles are centered around guilt. If you make someone feel guilty for being gay, or having an abortion, or not practicing Christianity, I'm pretty sure that's not liberalism.
A): The word "Mainstream" would have served you there so I don't have to hunt down every bumfuck cult after the Council of Nicea on, from those who believe incest is worship of the Lord to believing Jesus already returned to earth. I'm sure at least one of the Gnostics would disprove you if nothing else. B): define "centered around guilt". If that means Original Sin it's different then guilt from doing bad things. Some Christians (Calvinists in particular) have a very totalizing view of guilt: Everyone is! Others have much different conceptions. For example in the Orthodox church no one inherits the sin of Adam and Eve: we inherit their consequences (DEATH), but not their personal guilt; and on guilt and sin in general, even being cut off from Communion with the Orthodox Church for some egregious act does not in-and-of-itself damn one to hell, de-emphasizng guilt for sin. But I'm not a comparative theologian.
What's more interesting is your position that guilt defines non-liberalism. Can you really say that believing in guilt, or focusing on it in any way, makes you not-liberal? I've never heard of guilt being used to define liberalism before.
Catholicism is a religion that tells you some stuff but more importantly it's a lifestyle that tells you that you are guilty. You can skip mass for ten years and you won't get any of the catholic religion but that catholic guilt will still be with you.
...Huh, that's actually pretty accurate way of describing (my experience with) Catholicism. I never really though of it like that.
Wikipedia on Catholic Guilt. It's interesting because the Catholic position of Original Sin seems like it wouldn't lead to a guilt-focused position, but then again what I know of Catholic teachings (Sin as excess, and their reliance of Plato's four virtues) shows that it could be otherwise...