I live in Pennsylvania and they pull TU here exclusively (last year for credit card). Not sure about other places, however, I opened my checking account in New York City and they pulled TU for that there as well. Might want to wait for others to respond though.
When I was in Indiana I worked for the bank for 2 years and they pull from TU but when credit is deemed light or "inconsistent" they have been known to also pull EX and on lesser frequency EQ. Hope that helps.