You can edit the fields that you want to see on the Summary Panel using Layout Templates. Hope this is what you are look for! Please mark this as 'Correct Reply' if this helped you and to help others.

Does Workfront support Service accounts(with ultimate admin access) concept similar to Jira?

I believe sharing will automatically happen when you create Project using the template. You can only edit the sharing of your projects or tasks once there are created.

Seems like only way is to look through the Dashboard sharing and the Layout Templates doesnt have any icon representing it like any other Job role(Hammer), User(one person), Team(2 persons) and Group(3 people)

If this helped you, Please mark my above reply as Correct to help others as well.Thank you!

Thanks @MorganHatcher Any suggestion on how to achieve this using text mode just to show the Dashboard sharing with Layouts?

Thanks for sharing the screenshot @MattCa13 Your current report is working for both of your filters(one set above the OR and other set below it)You have to add the same filters for Contract type & Owner ID in the OR condition as well to pull the data that you are looking for.