SAML2 LoginHint?

With OIDC I can set the LoginHint using the ProtocolMessage object before redirection to Okta. Is there a similar mechanism for a SAML app? Is there a way I can tell Okta what username to use when the user lands on the SAML login screen?

Has anyone explored … ?

https://www.ssogen.com/oracle-ebs-sso-okta/

Please refer any suggestion?

Thank you,
– Mike.