We tend to think of light as a straight line affair and measure distance accordingly, but if light is being bent hither and yon by every celestial body somewhat between the source and the observer, it's actually traveling a greater distance. Like driving a car on a curvy road - traveling 20 miles to get 10 miles as the crow flies. Does that differential result in a red shift? I dunno. Crows are crafty.
If find this to be fascinating.
Redshift quantization, also referred to as redshift periodicity,[1] redshift discretization,[2] preferred redshifts[3] and redshift-magnitude bands,[4][5] is the hypothesis that the redshifts of cosmologically distant objects (in particular galaxies and quasars) tend to cluster around multiples of some particular value.
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Ruling out errors in measurement or analysis, quantized redshift of cosmological objects would either indicate that they are physically arranged in a quantized pattern around the Earth, or that there is an unknown mechanism for redshift unrelated to cosmic expansion, referred to as “intrinsic redshift” or “non-cosmological redshift”.
https://en.wikipedia.org/wiki/Redshift_quantization