The anime generally adheres very closely to the novel/web novel. It maintains the core elements such as the nature of the main character Ainz Ooal Gown and his goals. The relationships between the various characters, whether it's the loyalty of his subordinates or the enmity with other forces, are also well - represented as in the original work. There are only a few minor omissions or condensations here and there, mainly to fit the story into the anime's episode format.
It follows quite closely. The anime mostly adheres to the manga's plot and character developments, with just a few minor tweaks.
Yes, it does. The Overlord anime mostly adheres to the manga plot with few differences.
It follows the light novel quite closely. Most of the major plot points are the same.
Somewhat. It captures the main ideas but not all details.
It follows to a considerable extent. There are some differences, but they don't significantly impact the main plot and character development.
It follows to a considerable extent. But there are still some differences to make it more suitable for the anime format.
It follows quite closely. The anime of No.6 mostly adheres to the manga plot, with just a few minor differences that don't significantly change the main story.
The Haikyu anime follows the manga pretty closely. There are only a few tweaks here and there for better animation or to make it more suitable for the screen, but the essence remains the same.
The JoJo anime is quite close to the manga. Most of the key plot points and character developments are accurately represented.
In general, the Naruto anime is a decent adaptation of the manga. Some parts might have been stretched or reordered for better pacing on screen, but the core elements remain intact.