There are many writers who have contributed to the MCU comics. For instance, Brian Michael Bendis and Jonathan Hickman have played significant roles in shaping the stories.
In general, the MCU has its own continuity and doesn't strictly follow the comics as canon. There are elements borrowed and adapted, but significant changes are made to fit the cinematic universe.
In general, the MCU's multiverse concept is not exactly the same as in the comics. There are variations in how characters and storylines interact across different realities.
I'd say it's a matter of personal taste. The MCU offers a cinematic experience with big-budget production values, but the comics have a longer history and a wider range of storylines and characters.
The MCU draws inspiration from a wide range of Marvel Comics. Some of the key ones are Captain America, Thor, and Guardians of the Galaxy. These comics provide the foundation for the characters and storylines we see on screen.