When I ordered my 2020 Ram Laramie, I wanted the deployable steps. But as you discovered, you have to switch to Laramie B package to get the step option. All me and the dealer could see different, is the software in Uconnect is different on Laramie A and B. The B software adds a setting to turn the steps on and off, it's not in the A settings. Since I didn't want to spend a couple thousand more for the B package, then another thousand for the factory steps, I bought the Amp steps. They are awesome! I recently swapped them from my 2020 to my 2022, still working perfect. In fact, I found a website, Electricstep.com, that sells the Amp steps, and all the parts for them. They even had a hardware kit that I bought with the crush nuts you use to hold the steps to thew body. You have to leave the original crush nuts embedded on the truck when you take the steps off.
The only problem with Amp steps is they are now on national backorder, no idea when they will be available.