I have had several mirrorless bodies, Sony A6000, Fuji XPro3, Fuji X-E4, but my Sony A7iii is the only one on which I seem to have sensor dust every single time I swap lenses…
Brand by brand how impacted are you by this issue ? Do you think that there are specific models which exhibit this issue more than others ?
On my Nikon I experience sensor dust when I stop down to f/14 or more and shoot something that is a single color.
Other than that I don’t notice it. I don’t clean the sensor more than every year or so.