Disc golf is still very regional, so what discs are big changes from place to place. Most of the discs with a really big following are made by Innova as they have the biggest distribution by far.
Here would be my "Hall of Fame" for golf discs.
Innova Aviar: Easily the best-selling disc of all time.
Gateway Wizard: The longest putter on the market. Sales of this one disc keep Gateway afloat.
Millennium Omega Supersoft:Original "putter" plastic wasn't really all that soft, but the Omega Supersoft set the standard for the floppy, sticky putter plastic that is so popular today.
Innova Roc: See above.
Discraft Buzzz: Finally, a mid-range from Discraft that flies like a Roc. It will hold any line you put on it.
Innova Stingray: Anybody else remember when the Stingray was the Max-D disc on the market? It has evolved from distance driver to turnover mid over the years, but it has remained a useful disc in many players bags over the years.
Innova Viper: People forget that this was the best-selling driver of the 90's. It was the pinnacle of "large diameter" drivers. Big, slow and overtable, it has been replaced by faster, small diameter discs.
Discraft Cyclone: Revolutionary when it was released, it is a fast (well, it was fast at the time) driver that you can shape a variety of lines with. Pros and recreational players could all use this disc for distance drives. Discraft is often accused of "copying" Innova discs, but Innova copied the Cyclone when it released the Gazelle a year later. The Cyclone is still a great fairway driver today.
Millennium Polaris LS: This disc pushed all the technical specs at the time of it's release, and it was released in the upgraded "Millennium" plastic. It proved that disc golfers would pay more for better plastic and started the march toward premium plastics.
Gateway Sabre: Gateway's first disc was a winner. You have to throw it hard to get good results, but it is a super-predictable flyer.
Innova TeeBird: If any other disc has a Roc-like following, it is the TeeBird. It flies long and straight with a predictable fade...It is often called a "longer Roc." Despite all the hype over high-speed drivers, top throwers still use the TeeBird in distance competitions.
Innova Valkyrie: The disc that started the rim wars. After the Valk, every year somebody had a new disc with a bigger rim that supposedly flies faster, farther, better, makes you coffee, etc. Tech standards have put a cap on that, so we will see what the next innovation in discs design will be.
Innova Firebird or Discraft Predator: Everybody loves an overstable pig. These two are the class of that field.
There are a lot of newer discs out there...Wraith, Surge, Destroyer, yada, yada, yada. I'll let the test of time work it out before I put them on this list. One new disc that will be on the list is the
Quest Turbo-Putt: For years, Innova's patent on golf discs allowed them to de facto control the evolution of the golf disc. Discs like the 10M Brick and Turbo Putt signaled a new era in golf disc design and forced the PDGA to tighten the definition of what is a golf disc. Because of that it will impact what we are throwing long after it disappears from the scene.