Article to read “Cookie clutter: Chrome saves Google cookies from cookie jar purges” https://www.theregister.co.uk/2018/09/25/chrome_69_google_cookies/
“Remove all”, it simply won’t remove all the cookies. The Google cookies remain, which we’ve verified for ourselves.
Another reason to doesn’t use Google Chrome, a pure product of GAFAM and to use a free software browser like Mozilla Firefox. And to free you entreprise from GAFAM, use Openpaas !