Here are the settings that I am using for my Sony A9ii for taking pictures of airplanes while moving through the air. The lens I use for this most days is the 100-400.
Aperture – F14 or below so that Phase Detect will still work for the auto focus
Raw or JPG – RAW, since the camera is so fast it can keep up with just about anything
Metering Mode – Spot so that I can capture the frame
Shutter Speed – Trying to get as low as 1/160 for prop planes for jets as fast as possible to catch them as they fly by.
Focus Mode – Continuous + Wide with Tracking, the camera auto focus is so fast that it catches the planes pretty quickly
Exposure Compensation – usually + 2/3 if it’s dark plane on a bright sunny day, this helps bring out the colors of the plane.
Frame Rate – Continuous Mid – I find that high fills the buffer and mid gets more than enough shots.
ISO – as low as possible, unless it’s an overcast day and then I will move it to Auto-Iso to maintain the shutter speed when needed.