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 | Allison | Isla |
|---|---|---|
| Official rank | #103 | #28 |
| Combined rank | #58 | #30 |
| Rank difference | 45.0 | -2.0 |
| Multiplier | 1.6× | 1.0× |
| Rate per 10k | 25.2 | 37.4 |
| 1-in-N | 396.6 | 267.3 |
| Trend label | past peak | recently peaked |
| Expected per 100 | 0.1 | 0.2 |
| Expected per 300 | 0.4 | 0.5 |
| Latest as % of peak | 38.0% | 100.0% |
| Peak year | 1986 | 2025 |