Research depth
Discovery
How well the tool supports keyword, competitor, SERP, backlink, or market research before execution.
Google Trends
Useful directional topic and query-interest research, without SEO difficulty, backlink, crawl, or SERP-depth data.
Explore and Trending Now show public search-interest patterns over time. https://trends.google.com/trends/
Looker Studio
Connected dashboards can support analysis after data is supplied, but Looker Studio has no native keyword, backlink, SERP, or competitor research database.
The official product describes data connectors, visualization, and reporting rather than SEO discovery research: https://lookerstudio.google.com/