It's actually quite hard to know just what The Christians were because their own propaganda doesn't square at all with their reputation. Rome thought of weird cults much as we do but it didn't care about them.

I have two explanations but they're very similar.

One is that right from the start there was a whole range of ideas in the sect and a lot of Romans reacted like too many people do now to the idea of Muslims because some Christians were dangerous nutcases.

The other is that there actually never were originally different groups with a common origin. There's a part in Acts of the Apostles where it says that in Antioch (I think) followers of The Way were first called Christians. But that doesn't mean they were the only people called that. It might have meant just Cultist or similar, people with their own divinised leader outside of the recognised religions.

The Bible speaks of Gentiles from the Latin Gens meaning Clan (more or less) and we of Pagans but they never called themselves that and there was no fixed Pagan Religion, just a lot of them and probably even within any one pantheon everybody had their own preferred deity like Catholics have their preferred saint. Until Vatican II at least half the saints probably were pagan deities anyway.

An oddity aside: Scientologists call outsiders Wogs. It's LRH's own coinage but it is a little odd that somebody as American as him used a British term that I don't think is used in the US because it refers first to Asian imperial subjects and second to Africans and often anybody un-British. I remember it being explained as Wealthy Oriental Gentleman - and if you believe that you're probably good Scientology material image

God created man and man created God. So is it in the world. Men make gods and they worship their creations. It would be fitting for the gods to worship men. (Gospel of Philip: Logion 85: 1-4)