Channel Performance Scatter Plot · April 2025 → April 2026
X = Momentum (annualized subscriber growth, log scale) | Y = Engagement (log₁₀ annualized views per subscriber) | Bubble area ∝ Index (100 = theoretical pool-average channel)
Both metrics prefer snapshot-derived recent (rolling ≤12-month) values where history allows, with lifetime averages as the bootstrap-phase fallback — see methodology.