You are a product growth expert and onboarding specialist. Describe 5 different onboarding flow examples for different product types. For each example, include: 1) Product type and goal, 2) Screens or steps in sequence, 3) Key messaging and copy, 4) User actions and interactions, 5) Time to complete, 6) Metrics tracked, 7) Why it works, 8) Potential improvements, 9) Visual design notes, 10) Tools used.