Journey tracking from one domain to another using sso & utm is already set

I will assume that the report suites are different?
You can setup to see destination URLs for clicks that redirect to Website B from Website A.
And then referrals from Website A to Website B on Website B’s report suite - then break this down by Entry pages.

Are you looking for something like this?

Since Website A and Website B use different Adobe Launch scripts and report suites, I suggest you review the cross-domain tracking setup to ensure accurate tracking of users moving from Website A to Website B.

The UTM parameters will help preserve campaign information when users move between the sites. However, UTM parameters alone may not reliably identify the same visitor across both websites.

To analyze the complete journey, also confirm that:

• Cross-domain visitor identification is configured correctly.
• The same Adobe visitor identity is maintained when users move from Website A to Website B.
• The required campaign and referral parameters are retained during the transition.
• Both websites send the necessary page-view and link-tracking data.
• The reporting structure supports analyzing data from both sites together.

If the objective is to view the complete journey and identify the top entry pages across both websites, you may need to use a shared or consolidated report suite. If the report suites must remain separate, you can still analyze the handoff by using consistent campaign parameters, custom dimensions, and exit/link-tracking events from Website A, followed by entry and campaign data on Website B.