The "Find Sitemap URLs for a Company Website" enrichment doesn't specify whether it uses HTML or XML sitemaps. It retrieves subpage URLs from a company's website using sitemap information, but the exact type of sitemap isn't mentioned. The enrichment requires a company domain as input and can optionally filter URLs by keywords. It's designed to compile a list of relevant URLs within the specified domain, which can be useful for website analysis, content auditing, or competitive research.