Hey Geoff, go with what you’re comfortable with.
Most of what I described are shooting styles that optimize data.
And that’s not always the aim and I don’t always follow my own advice either although i’m moving more and more towards that style.
Most of the time I shoot aperture priority and playing with exposure compensation but in non-changing light, you could just set your manual settings and forget about it until you leave that environment, in which case just a single change back to aperture priority. Auto-iso doesn’t even exist on my dinosaur DSLR but if it did, I would probably use it if it gave me enough parameters to set it up properly.
A final note, if your aim is good accurate colours I have found that trying to achieve SOOC perfection is the best practice. Maximizing data is all well and good for tonality and PP flexibility etc. but colours are sometimes a bit off, especially skin tones. I think I know why but haven’t really researched it so I’m not entirely sure if it’s my camera model anomaly or across the board. When shooting portraits I try to nail it in-camera usually.