Was that at the beginning of IJS, before they introduced the < symbol and just called downgraded triples as doubles?
So, here's the correct list:
6 DIFFERENT 3-3s: Polina Shelepen (3T+3T, 3S+3T, 3F+3T, 3F+3Lo, 3Lz+3T, 3Lz+3Lo)
5 DIFFERENT 3-3s: Miki Ando (3T+3T, 3T+3Lo, 3S+3Lo, 3F+3Lo, 3Lz+3Lo)
4 DIFFERENT 3-3s: Surya Bonaly (3T+3T, 3S+3T, 3F+3T, 3Lz+3T); Elena Radionova (3Lz+3T, 3Lo+3T, 3S+3T and, according to AlexRus, 3T+3T); Shizuka Arakawa (3T+3T, 3Lz+3T, 3S+3T, 3S+3Lo)
3 DIFFERENT 3-3s: Midori Ito (3T+3T, 3Lz+3T, 3A+3T (maybe 3Lo+3Lo, if you remember when please post the link)); Irina Slutskaya (3S+3Lo, 3T+3T, 3lz+3Lo); Adelina Sotnikova (3T+3T, 3Lz+3T, 3Lz+3Lo); Carolina Kostner (3T+3T, 3F+3T, 3Lz+3T); Yu-Na Kim (3T+3T, 3F+3T, 3Lz+3T); Sarah Hughes (3T+3Lo, 3S+3Lo, 3Lo+3Lo).
http://www.youtube.com/watch?v=FEyU1Baaaeg&t=1m23s . Let's remember she's one of two women that performed 3 axel - 2 toe, which is also an accomplishment but still, technicaly it's not a triple-triple. So if we count national competitions, Mao can be added to the list
Since you find combinations with half loop + 3Sal on the back end to be "easy and not combinations at all", have you ever managed to do a Triple jump + half loop + 3Flip? I'm guessing probably not. It is a very difficult combination.
Agreed on the difficulty of 1/2 loop+anything. The 1/2 loop is a tricky beast because the tendency is to let the checking shoulder start to release which makes it super-easy to pop or not even be able to leave the ice on the follow on jump. It should NEVER have been considered a sequence to begin with as (other than the ISU arbitrarily considering it an unlisted jump element) it meets the definition of combo as there is no change of foot/edge between the landing of one and the take off of the other.
From a difficulty standpoint, very few skaters have done 1/2 loop+jump combos:
3A+1/2 loop+flip: Plushenko
3F/3T/3Lz+1/2loop+sal: Gold, Chan, Rochette, Aaron
And 1/2 loop+3Lo Sequence:
Are there videos of Polina's Triple Triples?
Specifically the Flip-Loop and Lutz-Loop?
http://www.youtube.com/watch?v=UlBllbnRZC0 ) and I've seen it in another video and it was better, but I don't remember where...
Polina lands 3f-3t-2lo here http://www.youtube.com/watch?v=v3Qb7ARRB1A, it was way back in 2008 when she was so tiny, but still, pretty impressive. I think she may have landed 3lz-3lo (no clue about ratification) at one of the Russian test skates this fall, but I can't seem to find the video on youtube...