>>528073874
T26E5 is a 'jumbo' Pershing, it's a negrobunker in a downtier.
T26E1-1 has the 'same' armor as the normal Pershing, with an extra plate welded over the hull and over parts of the turret with the same 90mm used in the T32's.
T34 is decently mobile, and if hull down is a negrobunker that slings 120mm AP shells through everything.
My personal rankings would be
T34>=T26E1-1>T26E5