So it seems everyone is saying, "I have my own way of doing things and it works for me."
I think that's only true if you look at in a very narrow way.
I see two basic schools of thought.
One is like the way Mickleson, and virtually every Tour pro, chips. Using a very lofted club and hitting it low, often as low as possible.
The other approach is the often-touted idea of using many different clubs.
While there are certainly some variations within those two schools, they are much smaller than the difference between the schools.
Both methods do work darned well. I have chosen the high-loft version for one reason. Every time I tried, or watched someone else try, to hit a chip out of a cuppy lie with a 7 iron or the like it results in thin or fat shots. If your hands are ahead enough to get to the ball, you need the loft.
And since I have gotten pretty good at that, I couldn't see a reason to use a different method for other chips.