The 77L looks like it has the most range of all the planes, but due to fuel costs it actually cannot go to as many destinations.
I think the 789, 744, and 77W are some Boeing with long range. The A35K and the A359 also have long ranges - they can go from IAD to SYD.
Check out this support post about configuring planes: Problem: I can’t send my A388 (Example) on a flight – it shows no available contracts