Many federal funding agencies are creating new Public Access Policies in response to the OSTP Memo released in August 2022 on "Ensuring Free, Immediate, and Equitable Access to Federally Funded Research." Colloquially, this is referred to as the Nelson Memo. Here, you can find links to various funders to learn about their new Public Access Policies.
The National Institutes of Health (NIH) came out with their new policy before the OSTP Memo went live.