I thinking putting is so personal, there is no right or wrong way. It's what works for you.
Some years ago I played with elderly chap who was helluva putter.
Used an old style blade putter, placing it just hole side of ball before address and then the stroke itself, ( like they used to )
He was all wrist, completely different from rocking shoulders etc.
He told me that he played Parkstone , often with Peter Allis, who used to say to him
" If I could have putted like you, ...., I would have won it all."
I myself have abandoned rocking shoulders technique, and gone quite "wristy, finding my distance accuracy much better.
