I don't know about the other phrases you mention, but with respect to the use of "personally ...", I have always used it when I'm not making a completely objective statement, meaning there is more of an emotional aspect to it. It's more personal to me than something I view in an objective way.
One of the phrases that we used to get a kick out of in the legal field was "unduly vague."![]()
But that's about all I can think of for now ...![]()