FileBird is one of the best WordPress plugins for organising and managing your media assets in well-organized folders.
Neve is a multipurpose theme that loads fast and AMP optimized multipurpose WordPress theme. It works great with all page builders.
Qubely is an advanced block tool for Gutenberg. It is a full-fledged Gutenberg block toolkit with plenty of custom blocks, predefined sections.
Brizy is a fast and simple next-generation website Page builder that everyone can use. There are no design or development skills necessary.
Perfmatters is a lightweight web performance plugin that allows you to disable unneeded features (mostly JS & CSS) to speed up your site.