tedrbr,
Well, the Japanese could get the H8K2 'Emily' flying boat. It was kinda rare though. It was fully protected with crew armor and self sealing tanks. Had five 20mm Type 99 Model Is and a number of 7.92mm machine guns (including one ventral) for defensive fire. (Allied nickname was "Flying Porcupine") Was powered by four 1,800hp engines with a climb rate of over 1,500ft/min. It's bombload was eight 250kg (550lb) bombs or two 1,500kg (3,300lb) bombs, or two torpedoes.
As far as the Germans go, you overlooked the Ju188A. It was better then the Do217 and while perhaps not as good on paper as the He177, it was far better in actuality. More than 1000 built.
It is also one of the prettiest bombers of WWII.