Gutenberg is WordPress own page builder. It get's the job done, but it's very limited.
Divi is a theme that almost all WordPress users know. They have their own page builder.
WPBakery is a older page builder. It's really extensive and you can do a lot of different things. It also integrates with 3rd parties.
Visual Composer looks a lot like WPBakery. But functionality wise they offer a lot fore of functionality. Both for content and building your website.
2. Visual Composer
It's probably not a secret that Elementor is the number one page builder. It's so well made and integrates with a ton of different 3rd party apps.