Rhino's layouts are used to produce 2D drawing sets and multi-sheet PDF's. Rhino 6's current UI makes it difficult to manage and organize more than 5+ layouts. "Layout Hawk" was designed to make your Layout experience with a large number of layouts more efficient and more enjoyable. This plugin that was developed by our team at the AEC West Coast Hackathon and uses a vertical panel display to view the layouts, rearrange them, rename and search/filter for specific layouts. Give the wip a try. And let us know if it works for you.
Download here: github.com/dalefugier/RealDrawings/releases