Not just taste in literature, this thread also depends on age of the respondent. I can a list a few novels I enjoyed as a child, read again as an adult, and can recommend to other readers.
"Huckleberry Finn" by Mark Twain (Samuel Clemens). I genuinely like and admire old Huck, his loyalty to Jim, his willingness to listen and become involved with others. Never liked Tom Sawyer, mealy-mouthed fake, a rich (compared to Huck) kid who gets others in trouble nearly getting Huck killed.
"The Rolling Stones" by Robert Heinlein. Castor and Pollux Stone, brilliant but mischievous red-headed identical twins, study mathematics and build rocket engines. Mom practices medicine and free-fall surgery. Dad, retired rocket pilot, is former mayor of Luna City. Sis square dances while Grandma Hazel (a continuing character in later novels) plays chess with little brother Lowell. Adventures ensue.
"Number of the Beast" also by Robert Heinlein but written for adults. Argue if you will whether SF can be literature -- Heinlein discusses this issue at length via writer characters -- this novel may be the most influential though least read American fiction in print. Heinlein's alter ego Jubal Harshaw, the wise doctor/author from "Stranger in a Strange Land", discovers an original alternate reality, a 'universal truth' now actually practiced by millions of F&SF fans who likely never read this book but read or watch series written by authors who have.
Every great writer creates not just a fictional environment but also a real world peopled by readers and favorite characters.
Sounds absurd but this idea permeates modern literature. I read two threads in PF science forums just this week that invoke Heinlein to some degree including a Many Worlds Interpretation (MWI) post asking if human ideas create or exist in some MWI universe. Heinlein brags about borrowing themes from other authors, many included as characters in "Number of the Beast", but this concept belongs to him. RAH.