ADFS 2019 & multiple IDP

Hello,
We have Exchange hybrid environment, with ADFS (ADFS 2019 + WAP) deployed. All is working fine.

We host a third party application, and a third party LDAP. ADFS is used for authentication (claims aware application). AD Users and other LDAP users must access to application.

WE configured Home Realm Discovery with OrganizationalAccountSuffixDomain.
Eveything is working fine but.. our third party LDAP contains lot of domain names. I can not add all of our domain names.

Is it possible to configure our third-party LDAP as default IDP? Our AD domain contains only 1 domain suffix.

Thanks
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