The records indicate that after the US government, the Bill and Melinda Gates Foundation and GAVI, the Vaccine Alliance, are the 2nd and 3rd top financiers of the WHO. The US defunding the WHO actually tightens the technocrats already firm grip on another global institution.
This means when Donald Trump stated the US will no longer fund the WHO, the Gates Foundation and GAVI stepped into the top financial role. Additionally, GAVI was founded by and largely funded by the Bill and Melinda Gates Foundation in 2000.
Either way, Bill Gates is the top donor and will continue to expand his influence and dominance of global health policy: https://humansarefree.com/2020/07/bill-gates-who-trump-gives-billions-to-gavi.html