“No submissions through Grants.gov will be accepted. All submissions must follow SAM.gov instructions. For full opportunity announcement see SAM.gov link below". https://sam.gov/opp/7aca91ca2c5842ed9898b5226493ab85/view
Additional eligibility information: For full opportunity announcement please see the referenced SAM.gov link under Additional Information below.
Each funder sets its own eligibility, so check the details on their page before you apply.