From here, the list:

Organizations from Which the United States Shall Withdraw.  
(a)  Non-United Nations Organizations:
(i)       24/7 Carbon-Free Energy Compact;
(ii)      Colombo Plan Council;
(iii)     Commission for Environmental Cooperation;
(iv)      Education Cannot Wait;
(v)       European Centre of Excellence for Countering
Hybrid Threats;
(vi)      Forum of European National Highway Research Laboratories;
(vii)     Freedom Online Coalition;
(viii)    Global Community Engagement and Resilience Fund;
(ix)      Global Counterterrorism Forum;
(x)       Global Forum on Cyber Expertise;
(xi)      Global Forum on Migration and Development;
(xii)     Inter-American Institute for Global Change Research;
(xiii)    Intergovernmental Forum on Mining, Minerals, Metals, and Sustainable Development;
(xiv)     Intergovernmental Panel on Climate Change;
(xv)      Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services;
(xvi)     International Centre for the Study of the Preservation and Restoration of Cultural Property;
(xvii)    International Cotton Advisory Committee;
(xviii)   International Development Law Organization;
(xix)     International Energy Forum;
(xx)      International Federation of Arts Councils and Culture Agencies;
(xxi)     International Institute for Democracy and Electoral Assistance;
(xxii)    International Institute for Justice and the Rule of Law;
(xxiii)   International Lead and Zinc Study Group;
(xxiv)    International Renewable Energy Agency;
(xxv)     International Solar Alliance;
(xxvi)    International Tropical Timber Organization;
(xxvii)   International Union for Conservation of Nature;
(xxviii)  Pan American Institute of Geography and History;
(xxix)    Partnership for Atlantic Cooperation;
(xxx)     Regional Cooperation Agreement on Combatting Piracy and Armed Robbery against Ships in Asia;
(xxxi)    Regional Cooperation Council;
(xxxii)   Renewable Energy Policy Network for the 21st Century;
(xxxiii)  Science and Technology Center in Ukraine;
(xxxiv)   Secretariat of the Pacific Regional Environment Programme; and
(xxxv)    Venice Commission of the Council of Europe.
(b)  United Nations (UN) Organizations:
(i)       Department of Economic and Social Affairs;
(ii)      UN Economic and Social Council (ECOSOC) — Economic Commission for Africa;
(iii)     ECOSOC — Economic Commission for Latin America and the Caribbean;
(iv)      ECOSOC — Economic and Social Commission for Asia and the Pacific;
(v)       ECOSOC — Economic and Social Commission for Western Asia;
(vi)      International Law Commission;
(vii)     International Residual Mechanism for Criminal Tribunals;
(viii)    International Trade Centre;
(ix)      Office of the Special Adviser on Africa;
(x)       Office of the Special Representative of the Secretary General for Children in Armed Conflict;
(xi)      Office of the Special Representative of the Secretary-General on Sexual Violence in Conflict;
(xii)     Office of the Special Representative of the Secretary-General on Violence Against Children;
(xiii)    Peacebuilding Commission;
(xiv)     Peacebuilding Fund;
(xv)      Permanent Forum on People of African Descent;
(xvi)     UN Alliance of Civilizations;
(xvii)    UN Collaborative Programme on Reducing Emissions from Deforestation and Forest Degradation in Developing Countries;
(xviii)   UN Conference on Trade and Development;
(xix)     UN Democracy Fund;
(xx)      UN Energy;
(xxi)     UN Entity for Gender Equality and the Empowerment of Women;
(xxii)    UN Framework Convention on Climate Change;
(xxiii)   UN Human Settlements Programme;
(xxiv)    UN Institute for Training and Research;
(xxv)     UN Oceans;
(xxvi)    UN Population Fund;
(xxvii)   UN Register of Conventional Arms;
(xxviii)  UN System Chief Executives Board for Coordination;
(xxix)    UN System Staff College;
(xxx)     UN Water; and
(xxxi)    UN University.