one other benefit of using SAML is if you have 3rd parties you can set them up with an account in okta eg
jbloggs@corp.com then use shadow accounts to map that to an account in your domain all you have to do is add the @corp.com upn suffix in domains and trusts and set the upn of the shadow account to @corp.com. they never know the password of the ad account and cant login anywhere else