When I look this up online, it seems to be just Proctor and Gamble & Dawn products though that picture looks like there are still a lot of Dawn products on the shelves, maybe just not their regular blue stuff. ???
I buy large bottles of generic dish soap in bulk from Dollar Tree. The main disadvantage is it comes in weird scents. I'm currently using Green Apple scented. However it works fine and only costs 1/3. I probably have five large bottles left.