With a range powerful drawing tools, a plethora of templates, and rich integration with third-party apps via the Miro Maketplace, Miro is as useful for classic brainstorming at it should be for the creation of high-quality whiteboarding, brainstorming and presentations across an infinite canvas. It's free for up to three users, otherwise $7.95/user/month. The tool integrates with industry standard solutions including Slack, Photoshop, Sketch and Teams.
There is a presentation mode in which one person can make their point. All users can add text and upload files (including Photoshop and Sketch files), add shapes, and more.