[qes]

Appliances, in my opinion, are a racket that artificially creates stratification among models to provide a variety of price points.

That said, very few refrigerators out of the large number of available models (many more than say dishwashers or clothes washer/dryers) have the same interior layout.

Even two nearby models from the same manufacturer with minor feature differences will have significantly different layouts, to the point that you can't just choose to get a fridge with or without feature X without also choosing between differences in the likely more important aspect of layout.