Custom Okta Account Chooser

Is there an official HTML widget that allows user selecting Okta account & domain,
like on the Okta Account Chooser page (

I would like to place it on a custom (multi-tenant) login page
in order to generate SAML login URL using chosen Okta domain name
and login user into the SAML application.

I’m not aware of any, but you can build one for sure

How do I obtain the list of Okta accounts user has ever logged into?
Where is this info stored in browser?
Cookies, local storage?

Oh, I understood you differently. I thought you were talking about different okta tenants, my bad