Those three positions are substantive? How so.., I assume if you're that loose with the word.. the most widely shared definition of free will should be substantive to you. Even one could say free will rejects the idea that we are imprisoned by a physical nexus of 'cause & effect' and typically what people follow from reading the bible. Evil fairy tales that delude a person. Anyhow I wish I knew of cause & effect very young because then I wouldn't have been grossly taken advantaged of and I assume is the reason the majority of people are conditioned to stay deluded.
Maybe email me at alizeebellerose @ icloud .com and we can have a better discussion. I was temporarily banned from HN for conversing about this topic. In any case the discussion would be better by email or elsewhere. I'm agnostic in the sense of purpose but I enjoy neuroscience enough and with physics that I cannot see real control existing in reality. Although, I would love to have someone explain to me how they see otherwise.