Sources

https://www.theglobaleconomy.com/rankings/Primary_school_completion_rate/: The average Primary School Completion Rate for 2019 based on 63 countries was 90.19 percent
https://www.who.int/news-room/fact-sheets/detail/drinking-water: In 2017, 71% of the global population (5.3 billion people) used a safely managed drinking-water service – that is, one located on premises, available when needed, and free from contamination.; 90% of the global population (6.8 billion people) used at least a basic service. A basic service is an improved drinking-water source within a round trip of 30 minutes to collect water.; 785 million people lack even a basic drinking-water service, including 144 million people who are dependent on surface water.; Globally, at least 2 billion people use a drinking water source contaminated with faeces.
https://ourworldindata.org/energy-access#access-to-electricity: 13% of the world do not have access to electricity (roughly 940 million people); 40% of the world do not have access to clean fuels for cooking (roughly 3 billion people); The use of solid fuels for cooking is a primary risk factor for deaths and morbidity from indoor air pollution.
https://oneill.law.georgetown.edu/how-many-people-lack-access-to-health-care-hint-more-than-who-and-the-world-bank-report/: 400 million of now more than 7.2 billion people in the world lack access to essential health services
https://news.gallup.com/poll/312401/750-million-struggling-meet-basic-needs-no-safety-net.aspx: Before the pandemic, most of the world was falling into either the High Vulnerability group (14%) or the Moderate Vulnerability group (39%). The rest, 47%, fell into the Low Vulnerability group.
https://datahelpdesk.worldbank.org/knowledgebase/articles/906519-world-bank-country-and-lending-groups: Countries Categorized by Incomes (GNI per Capita)
https://docs.google.com/document/d/11DqI4WlXMei2MNtpUIWWyo_NJFgkAvd2fpDA0dJwBlo/edit?usp=sharing: Full sources Google Docs (not organized) :(