My car is version 2019.15.11. If you touch any supercharger icon on the screen, the detail info will state whether it is 150kW, 120kW or 72kW. My curiosity was piqued last week at Lone Pine, when a Model 3 owner told me he started off with a max charge rate of 145kw.
I'm pleased to report that the vast majority of superchargers I checked on-screen are 150kW and there are only a few 120kw.
Here in California I only found Atascadero, Capistrano, Folsom and Mt. Shasta at 120kw. In Arizona Yuma, Buckeye, Kingman and Holbrook are 120kW. These are all quite old so I next checked the original cross country route using parrts of I40, I-70 and I-90. Sue enough all 8 chargers on that route between Holbrooke and Silverthorne,CO are 120 kW. Between Cheyenne, WY and Rosemont, IL there are 10 more 120kW locations, though that part of the route has been filled in with more chargers at 150kW between the older ones.