My thoughts on the topic? I try to keep it simple and not overthink it. I read the instructions that came with the incubator, did what they said, and got pretty good hatches.
I suggest you decide on something. It doesn't matter a lot what that something is. Be consistent throughout the hatch, then analyze the results and adjust as necessary.
I think you will find that we all have tremendously different circumstances and we get different results even with the same humidities. I am firmly convinced that there is no one correct answer for all of us.
If you wish to experiment and try different things, go for it. That is your business, not mine. I wish you luck, whatever you decide.