Step 3 and liquid #26 are going to be very close. Cleaner wax is all the steps at once, in the same bottle. Gold Class is a wax/poly hybrid that has mild cleaning action. It can be used as a replacement for step 3 or as a stand alone cleaner wax (if you are the kind of person who waxes over swirl marks).
There are also #6 (brown bottle, cleaner wax), #16 (blue can, older formula "heavy" wax with no cleaning action), #26 paste (black can, "pure" wax with no cleaning action), and Medallion Premium Paint Protection (newest formula "pure"wax with a polymer's durability, no cleaning action I think but I'm not sure). AND there's one called a "Quik Detailer" cleaner wax that's for dealer use in cleanup and recon departments, it comes in 1, 5, and 55 gal sizes.
LOL, you ain't the only one confused, friend!
The best place to ask Meguiar's questions is at
Show Car Garage . Mike works there and contributes here. He's very friendly and knowledgeable.
Tom