From the resource you provided, here are best and worst:
Most Freedom: TX, AZ, CO, ID, ND, SD, MO, TN, VA, NH
Least Freedom: CA, WA, IL, MA, NY, CT, RI, DC, MD, HA
Ten of each.
Most Freedom: TX, AZ, CO, ID, ND, SD, MO, TN, VA, NH
Least Freedom: CA, WA, IL, MA, NY, CT, RI, DC, MD, HA
I'll bet that break-down exactly matches the current US migration pattern.
When we were moving from California to Texas in late 2005, the rental rates for U-Haul equipment from Cali to Texas was something like four times as expensive as rental rates for the same equipment going in the opposite direction.
U-Haul didn't artificially raise the rates on the Cali end. They discounted the rates on the Texas end. My wife did some checking at the time and discovered that they were even offering to pay people to get their equipment back to Cali, under certain circumstances.
Consider this: Texas has a net in-migration of 1,350 US citizens a DAY, while Cali is undergoing an annual net loss of US citizens. The only thing that's keeping their population number steady is the influx of foreigners and revolving door Americans.