Here's what I would do...
In the 22gal, you have two choices. You can either keep ONE of your fancy goldfish (the oranda, lionhead, or one of the fantails) and nothing else...or you can completely start over with that tank. If you decide to start over, I would get rid of your molly since they don't like to be alone and putting more into the 22gal would overstock it and they won't really work in the 120gal (they might...you could try three or so in the 120gal), then move your tetras and dwarf gourami into the 22gal. I would get a few more mollies (they like to be with members of their own species) and several more tetras (because the colored white skirt tetras are the same thing as your black skirts, just a color variant, you could get either) and maybe a school of cories for that tank. So your stocking on the 22gal would look something like this:
6-8 white/colored/black skirt tetras
4 pygmy cories
1 dwarf gourami
That would put you at 100% stocked in the 22gal.
Now for the 120gal. You have a lot of room to play in this tank. Get rid of the mono sebae straight away and be sure when you take them back to tell the LFS you got them from what kind of fish they are and their requirements (print out some info on them and take it to them if you can). You could keep the albino rainbow shark and the dwarf gourami as they inhabit different regions of the tank. What kind of plecos do you have? If they are common plecos, I would get rid of one of them, probably both, mainly because they get to be 24" in length. You have the room for them, but they take up A LOT of your bio-load and they really don't do much after they get big. Maybe try to trade them in for a smaller species like a couple bristlenoses or clowns? Get rid of the two shubunkins as well. They are coldwater fish and don't belong in a tropical tank, not to mention the size the can attain (13"+) and the swimming space they need far exceeds a 120gal tank. I would also get rid of your bala sharks because they get to be HUGE and require TONS of swimming space, so if you had those in there, those would be the only things you could have. I would increase your school of tiger barbs (in a large enough group they are relatively peaceful) and increase your school of denison barbs (they're peaceful as well).
Here's what I would do in your 120gal:
10 tiger barbs
10 denison barbs
8 emerald green cories (these guys get BIG at 4" and aren't true cories, but you have the space for them, so they'd be cool)
1 dwarf gourami
1 albino rainbow shark
That would put you right at about 93% stocking capacity on the 120gal and give you a few nice schools of fish. If you added 3 mollies to the stocking on the 120gal (they like to be with members of their own kind), it'd crank you up to 98% stocked.
