I wouldn't put After life Gods in the same category as the Judeo-Christian Devil.

In mythology, it's common for the current pantheon of Gods to have defeated, and ultimately usurped, a previous pantheon. For example, the Aesir Gods usurped the Giants, and the Olympians usurped the Titans. When I think of the Judeo-Christian mythos of the battle in heaven leading to the fall of Lucifer, I can't help but think of those prior tales of Gods fighting amongst themselves.

The parallel is more clear if you think of angels and saints as being analogous to Gods and minor Gods. Which isn't so implausible given the fact that they stand in a heavenly hierarchy. Certain Angels - like Michael - are above others. We can see this in mythological thought too, as certain Gods (like Pan) were below other Gods (like Dionysis) who themselves were below the highest Gods (like Zeus). This is often represented in terms of their familial relations (ex: Dionysis is commonly the son of Zeus. And although Pan is sometimes depicted as the son Zeus, he's more commonly portrayed as tge son of either Dionysis of Hermes (who himself was another son of Zeus).

Another thing which strengthens this parallel is that these divine beings - most notably Saints - are "about" things (for example, Saint Vincent is the Saint of of Wine). This isn't all that different (in principle) to the Gods of various pantheons, which are also "about" things. For example, the lesser Greek God Dionysis is similarly the God of Wine. Of course, I don't mean to equate the two - saints were real humans before undergoing a posthumous ritual to elevate their status. Also, Vincent is about wine and vinegar, while Dionysis is about wine, festivity, and euphoria. But imo the general idea holds.

So anyways, to get back to your question, I think the right question to ask is whether anyone in, say, ancient Greece worshipped the fallen titans - the fallen enemies of the reigning God(s). And idk the answer to that question (but it's a very good question)