Regarding potentiometer pin numberings:
In the KiCad footprints library, I believe all the horizontal board mount pots (ones with the shaft parallel to the PCB) have pin 1 counterclockwise and pin 3 clockwise:
However, inexplicably, most of the vertical pots (shaft perpendicular to PCB) in the same library have pin 1 CW and pin 3 CCW. There are only a few exceptions including Potentiometer_Alpha_RD901F-40-00D_Single_Vertical:
This is really bizarre especially since if you look at for instance the Bourns PTV09A datasheet it shows the pin numbering the other way around:
Maybe there’s some datasheet out there for some pot that has pin numbering with 1 clockwise but I don’t know of one. So I think this is almost universally the accepted numbering, but it does not agree with a significant number of KiCad footprints.
To make my intentions clearer I use a custom pot symbol that has an arrow indicating clockwise rotation:
and then for vertical pots I always use footprints similar to Potentiometer_Alpha_RD901F-40-00D_Single_Vertical.