Best Power Steering Fluid for Regal LS 97 3.8L

I am going to replace Power Steering Fluid in Regal LS 1997 3.8L
What are the best fluid brands/types for it? (preferably among those that walmart or NAPA or advanced auto or OReily delivers)
I am going for a long trip, so I will rather overpay to avoid issues with the steering pump
Can I use any brand?
I checked GM manual, it says only GM fluid is recommended, but I don't think it will be easy to find.
I have lots of Valvoline MaxLife Multi-Vehicle Automatic Transmission Fluid that I have no use for.
Some people say ATF was used for power steering (or still used)
may be use this ATF can be used for power steering?