Essentially the attack aircraft with the longest range? I'm looking for discussions and pictures of said aircraft?
I assume you are looking for un-refueled range.
Just about any of post-war jet attackers or fighter/bombers equipped for air-to-air refueling have 'global' range given enough 'drinks' from tankers.
Un-refueled, I would start by looking at the Douglas AD Skyraider. It has a 350 gallon internal tank, plus a lot of external load carrying capacity. Range depends on how many wing pylons are carrying drop tanks... more range, less ordinance.
The Martin AM Mauler has a similar load carrying capability to the Skyraider BUT the Mauler has an even more thirsty R-4360 engine.
British and Russian planes usually have fairly dinky internal tank capacity, so not likely to find a winner in that lot.
Though not technically 'attackers', P-51 / P-82 (F-82) line has a lot of unrefueled range.
Maybe an A-36 ungraded with the same rear fuselage tank used by the P-51B/C/D/K models.
But in my mind the late 1930s Vickers Wellesley bomber is the long range winner. A flight of Wellesleys (with extra internal tanks) was flown non-stop (and non-refueled) Egypt to Australia, 7000+ miles by the British Long Range Development Unit (LRDU) in 1938.