Not true. The "classification" is combatants killed and identified by the IDF with first & last name. There's a larger un-identified group of combatants due to Hamas fighting in civilian clothes, and falsely claiming all deaths are civilian
it is said right there in your linked article that the IDF initially did not dispute the information when contacted by the no-name blog (does it mean it confirmed, refuse to answer or never talk about the authenticity of the information?)
Your article a few lines below says the IDF says this is false when contacted by the Guardian
