Are these items published in the BE76 manufacturer's Pilot Information Manual?
Some of them are, but quite a few are added by management too. I get the feeling the whole concept of checklist is misunderstood. By including things like "Approach briefing - Completed" you soon have your whole SOP written down on a checklist. If you figure out at G/S intercept that the brief has not been completed, you have other problems than an inappropriate checklist.....