He resisted doing a sequel to Bloodsucking Fiends for years, and when he finally gave in, it was a great example of why certain kinds of stories shouldn’t be continued
The sequel had to undue all the events that resolved the plot of the previous book, then the characters ran around randomly, then he had to put everything back the way it was before
All Moore’s books have the same kind of tone and pace and style—they don’t literally have to be about the same people, that’s not actually helpful
AFAIK his stand-alone novel Fluke is the only one that could be characterized as science fiction, people might want to check that one out if that’s their preferred genre