What credit card only checks trans union when you apply?

Answer 1

Washington Mutual and Juniper "almost" always pulls TU.

You might click on the last link I have listed in my profile. Then look at the top of the page, in the red bar, for CreditPulls.
Click on that and type in the name of the creditor that you are thinking of applying with. Don't check the box for the CRA since that will limit the information. (you wouldn't be able to see if that creditor pulled any other CRA)

It's a free database of what creditor pulled what CRA. What the persons scores were at that time. If the person was approved or not and what the limit was if approved, etc.

Answer 2

All lenders have their own default credit bureau. There is no way to tell which one they are going to pull unless you ask them in advance.