More true quickies (including some retired games): Most Expensive, One Wrong Price, Swap Meet, Bump, Gallery Game, Check Game (especially with only needing to right the price and not in words),
I'd consider Range Game a quickie since you just make one decision and the Rangefinder only takes up to 30 seconds to go all the way to the top.
Race Game, Clock Game, and Bonkers are still quickies to me, but a different flavor (the "timed" quickies).
The same could be said with the "fiddling quickies" (Push Over, Safe Crackers, Magic #, even Side by Side and Coming/Going), since just one decision is needed for these games.
Although there are no GPs, SPs or cars, I wouldn't consider Barker's Markers a quickie since it involves not just pricing three prizes, but also making a decision aftewards.
To me the gray area are the games Easy as 1-2-3, Shopping Spree, Danger Price, Credit Card, Make Your Move, Clearance Sale, Take Two, 2 For the Price of 1, and Step Up. They all require multiple decisions, though in Danger Price's case, one pick can result in a loss. Overall, these are what I like to call the semi-quickies. They almost always take a shorter run time that most GP/SP/Car games, with the possible exceptions of Money Game, That's Too Much, and Lucky Seven.