What is the name of the token in Federated Identity?

Question

JSON Web Token

There is an ACCESS token to access the resource. There is a REFRESH token to update the ACCESS token. And there is also its own authorization service that gives a token for accessing the general authorization service. And to get a token from him, you need one more. What is it called? (step 2 in the picture)

Answer 1

Basically an authentication token.
This is how the integration of Kerberos and other protocols works.