JA, I have the X-A3 and it supports remote trigger via the Fuji connect app over wifi. There's also a built-in intervalometer on the camera, and so far I've been using with my Samyang 12mm f/2.0 and 30 seconds is plenty!
But as above, the tethering is immature for the X-series, hence the thoughts about a Nikon with the same sensor.
Currently, the D5600 looks good.
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