Lenny Rachitsky
Creator of Lenny's Newsletter and Lenny's Podcast; ex-product/growth lead at Airbnb
He is the field's most effective educator on how product builders should work in the AI era, evangelizing hands-on, human-augmenting AI practice — though his axis is product, not design, so his fit in a design-specific index is doubtful.
Signature win. Built the most influential independent product-and-growth education platform in tech — a top-five Substack and top-20 tech podcast reaching hundreds of thousands of practitioners.