Technically, any creature can be a one-card win condition. I don't think this should be a yes/no attribute of a card, but that it should be on a scale.
How much damage can this one card do?
Dragons used to be pretty high on this scale, with 10 damage in one card, and they still are for 100 HP opponents with no healing. However, since the meta-game shifted to SoGs and such, dragons lost this damage-per-card efficiency for slower ramps such as Steam Machine, simply because 10 damage per turn is not enough anymore.
Also, I can't believe you forgot Chrysaora in your list of cards that can deal 100 damage in one turn. In addition, you shouldn't count Mindgate and definitely not Fractal, which rely on your opponent's cards and you having the quanta to Fractal your opponent's cards, without counting Parallel Universe and Steal. Also, if you're going to count Parallel Universe and Fallen Druid, count Pandemonium, too.
Plus, the phrase "if quanta allows" means that the card must be paired with quanta-generation cards, just as a scorpion must be paired with momentum.