For those interested, I use these Ad-block (uBlock Origin) filters on Stackoverlow Network sites:

  ! Block the hot network questions for focus
  superuser.com,stackoverflow.com,stackexchange.com###hot-network-questions
  ! Get rid of the distracting "Blog" area
  superuser.com,stackoverflow.com,stackexchange.com###sidebar > div:has-text(Blog)
  ! This banner reappears for me
  superuser.com,stackoverflow.com,stackexchange.com###js-gdpr-consent-banner
  ! Block the left sidebar that takes up space
  superuser.com,stackoverflow.com,stackexchange.com###left-sidebar