The summary map showing the level of Holocaust education in each country is here:
Areas that did not even mention the Holocaust even implicitly (light beige) include Angola, Antigua & Barbuda, Azerbaijan, Bahamas, Bahrain, Benin, Bolivia, Brunei, Cameroon, Dominica, Egypt, Fiji, Ghana, Guyana, Iceland, Micronesia (Federated States of), Iraq, Jamaica, (Kosovo)**, Lebanon, Nepal, New Zealand (!), "Palestine," Papua New Guinea, Samoa, Seychelles, Thailand, and Zambia.
Nations that only mentioned World War II or Nazism without mentioning the Holocaust (light orange)include Algeria, Bhutan, Bosnia and Herzegovina, Botswana, Burkina Faso, China, Cook Islands, Costa Rica, Côte d’Ivoire, Cyprus, Democratic Republic of the Congo, Dominican Republic, El Salvador, Gambia, Georgia, Honduras, India, Indonesia, Japan, Kenya, Lesotho, Malaysia, Mauritius, Morocco, Mozambique, Nicaragua, Niger, Norway, Pakistan, Paraguay, Peru, Republic of Korea, Rwanda, Scotland, Senegal, Sri Lanka, Suriname, Switzerland (Jura, Lausanne), Tunisia, Uganda, Ukraine, United Arab Emirates, United Republic of Tanzania, Uruguay, Yemen, Zimbabwe.
Many Muslim nations that probably do not teach the Holocaust did not submit textbooks for this study (white), including Afghanistan, Bangladesh, , Iran, Jordan, Kuwait, Oman, Qatar, Saudi Arabia, South Sudan, Sudan, Syria and many others.
Interestingly, the US state of Maryland is the only one called out for not teaching the Holocaust as its own topic and instead only as part of a more generalized human rights curriculum.