the first comparison is not technically correct, in the sense:
Chrome is built on top of Chromium
LibreWolf is built on top of Firefox
LibreWolf implements additional privacy features and settings on top of Firefox. Chromium is the base browser that everyone else built on top of. It does not implement additional privacy features.
perhaps a better comparison would be: LibreWolf is to Firefox what Ungoogled Chromium is to Chromium