Reasoning
We treated each URL as one perspective and selected a single, credible value from each source. The Business Dive source provides 460 with high confidence (0.90) and is the most plausible figure for built-in templates. Other sources report 1 or implausibly high figures (e.g., 20,001). Weighting by credibility, 460 emerges as the most reasonable estimate for the number of built-in templates.