I built a Chrome Extension called Bookee (https://onassar.github.io/extensions/bookee/) (https://chrome.google.com/webstore/detail/bookee-instant-boo...)
Not used by many people, but accomplished what I set out to: an extension that is accessible easily via keyboard shortcut at all times, that allows me to visually (open graph images, screenshots, thumbnails) search any bookmarks saved to Chrome.
The search is super-quick, and it has a bunch of other keyboard-shortcuts to quickly navigate my bookmarks.