Omniscient and 3rd person are the most common perspectives in older and classical literature. For a long time editors were reluctant to publish books in 1st person because of custom and that is was difficult to pull off really well. That has changed in the modern era where nearly half of traditionally published books are 1st person.

The other part, switching character POVs has also become more popular. It too is harder to pull off really well. One of the drawbacks is you don't get as close to any single character and sometimes get stuck with chapters for characters you don't even like. There are a lot of people that don't like the Game of Thrones books just for this reason. I know people that read the series skipping whole chapters because they didn't like a specific character.