The most profitable Substack newsletters include 1. Letters from an American (important historical events in political context), 2. Lenny’s Newsletter (practical advice on business growth, new products, personal careers), 3. The Pragmatic Engineer (mentoring software engineers), 4. Racket News (global news), and 5. The North Star with Shaun King (politics, power, race, change, and organization). [Insider Monkey]
Tilt Take: Though broad topics draw the biggest audiences, targeting niche audiences like software engineers can do well too.
