Questions about: spackling-paste

Flexible "putty knives" find more application when performing operations such as doing drywall taping. Particularly when larger width blades are used such as 6", 8" or 10" sizes. Smaller sized blades in the 1" to maybe 2
Gauge, metric, size, clearance holes, pilot holes & wall plugs. Which one to choose? Here’s a table of screw data I’ve put together because I find manufacturers recommendations are often very general, I mean; why not be specific? I understand the