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Most cleaning is just about finding the right solvent / reagent / carrier. I'd guess that mayonnaise works because the oil in it dissolves any oil in the mess, and can be emulsified easily and removed with soapy water.
Most of the internet life hacks seem to be finding everyday things that contain citric or acetic acid, acetone, mineral / some other oil or some sort of alcohol.
My father in law used mayonnaise to clean up lots of stains on a beautiful pine table I have.