not all site settings are deletable! accounts.google.com, www.google.com and the current search engine have always permission to: store cookies and play sound (accounts), location access and play sounds (www & current search engine)
after I delete all site settings, I have always this settings back in my configuration, when I select this settings and press the “clear & reset” button, this settings are still alive.
but I would like to delete this special sites!
brave 1.5.131, chromium 80.0.3987.162
android 6.0 (last security patches installed) on Motorola Moto E 4G LTE (2nd Edt)
android is unrooted and original motorola