Lead in and lead out settings

I wonder if anyone has been putting together a chart that we can all contribute to in regards to lead in and out based on thickness and diameter hole, basically a rule of thumb. I know we all contributed to a similar cut chart when using Razorcut 45 and the vipercut 30 for regular cutting in the early days of Langmuir OG Crossfire.
The pursuit of the perfect hole ( dirty minds spinning about now)
Anyway just a thought…