I have had email exchanges with Fleischmann's on this subject and do not believe that the Rapid-Rise yeast, which is marketed to retail consumers only, is exactly the same as their other fast-acting yeasts but apparently is close enough to group them as such. The IDY typically sold to professionals does not include ascorbic acid.
If you plan to make a lot of pizzas, you might want to seek out the 1-lb. bags of IDY marketed to professional bakers, either the Fleischmann's brand or the SAF brand. That size bag is commonly available at very low cost on a per unit basis at the big box stores (Costco's and Sam's, for example) and, at a somewhat higher price by mail order. The cost per pizza will be far less.