Google Ads announced that you can now create and share keyword plans in the Google Keyword Planner tool. Google said "you can now create, save, and share plans from directly within Keyword Planner."
Here is a screen shot showing your plans and also your shared plans:
Here is the scenario Google said "Let’s say you are a sports retailer planning to launch three new product lines: running shoes, fitness apparel, and gym accessories. In order to share your keyword plans in the past, you would need to create, download, and email them individually. Now you can create separate plans for each product line and share them directly with others for feedback, all without leaving Keyword Planner."
This launched on November 22nd but Google only posted this news yesterday afternoon.
Forum discussion at Google Ads Help.