B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
68%
68% -- ai overview citation top10 overlap for YMYL verticals (Healthcare, Insurance, Education) (2026)
YMYL verticals (Healthcare, Insurance, Education) show a 68-75% overlap between AI Overview citations and organic rankings according to BrightEdge's 16-month study.
- Reported as a range of 68-75% across YMYL verticals
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
68%
Unit
Percentage
Data Vintage
2026
Entity
Geography
Global
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
BrightEdge
Primary
Tier B
https://www.getpassionfruit.com/blog/how-to-do-keyword-clustering-for-entity-based-ai-search ↗
Source Article
How to Do Keyword Clustering for Entity-Based AI Search (2026 Guide)
SEO
Join 500+ brands growing with Passionfruit!
Keyword clustering in 2026 is no longer about grouping words that look similar. It is about mapping the entities, relationships, and semantic structures that AI search engines use to decide who gets cited. Here is the complete process for clustering ke…
Original Research
BrightEdge
· Original study ↗
Methodology
Range 68-75%, midpoint reported; BrightEdge 16-month study
Methodology documented
Segmentation
IndustryHealthcare
RegionGlobal
RoleAll marketers
Channelsearch
Cite this stat
Plain Text
YMYL verticals (Healthcare, Insurance, Education): 68% ai overview citation top10 overlap. Source: BrightEdge (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/aio-overlap-ymyl-68-75pct
HTML Embed
<blockquote cite="https://lighthousedata.io/data/aio-overlap-ymyl-68-75pct" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>68%</strong> -- ai overview citation top10 overlap for YMYL verticals (Healthcare, Insurance, Education)<br><small>Source: BrightEdge (2026) · <a href="https://lighthousedata.io/data/aio-overlap-ymyl-68-75pct" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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