Generate and upload XML sitemaps to Google Search Console. This helps Search Engines to index faster and better.
Generate small sitemaps instead of one huge sitemap. Create an index of sitemap and list the smaller sitemaps in it for efficient crawling.
If your website is huge and complex, create XML sitemaps and submit to Search Engines.
XML sitemaps to feed Search Engines
HTML sitemaps to help Users navigate
Avoid generating dynamic sitemaps, that cannot be read by Bots.