Name comparison
Compare names
Compare national popularity curves, combined-spelling ranks, trend signals, and practical duplicate estimates.
National popularity over time
Combined-spelling rank, U.S. national history. Lower ranks are more popular.
Quick verdict
Fast takeaways from the current comparison. Click a card to open that name report.
Detailed metrics
Sortable side-by-side values. Highlighted cells mark the strongest value for that row.
| Metric | Harlan | Jack |
|---|---|---|
| Official rank | #666 | #15 |
| Combined rank | #663 | #18 |
| Rank difference | 3.0 | -3.0 |
| Multiplier | 1.0× | 1.0× |
| Rate per 10k | 2.4 | 49.4 |
| 1-in-N | 4,173.5 | 202.5 |
| Trend label | fast rising | past peak |
| Expected per 100 | 0.0 | 0.3 |
| Expected per 300 | 0.0 | 0.8 |
| Latest as % of peak | 52.3% | 43.4% |
| Peak year | 1924 | 1927 |