Just checked the Tmax400 roll listed above, and it has three tracks for 6x9 as well. I'll try to get photos of the three papers if its helpful. The Tmax400 rolls were bought from KEH (I had another order, and figured I'd throw it in) in February of this year, for a trip I was taking.
some old Kodak for comparison and fuji Acros I. Fron top to bottom, Plus-X, Tmax 400, both mid 90s I think, Vericolor 400 of unknown age (found in a camera I bought), and Fuji Acros from the last batch they made.