Not a list but:

"UN’s World Food Programme Builds on Ethereum Blockchain Money Transfers"

https://www.ccn.com/banks-begone-uns-world-food-programme-bu...

"The pilot alone is said to save the agency $150,000 a month while eliminating a staggering 98% of bank-related transfer fees, according to Munich WFP innovation lab chief Bernhard Kowatsch."

I don't see how blockchain is relevant to that solution. Couldn't they do the same thing with any database-backed web app tracking account balances?

There you go if you want a list of concrete examples: https://pineapplefund.org/